Vulnerability-Lookup

BDU:2022-00683 (CVE-2021-3656)

Vulnerability from fstec – Published: 2022-02-09 – Updated: 2025-02-11 – View on bdu.fstec.ru Fixed

Title

Уязвимость ядра операционной системы Linux, связанная с недостатками разграничения доступа, позволяющая нарушителю повысить свои привилегии

Summary

Уязвимость ядра операционной системы Linux связана с неправильно наложенными ограничениями безопасности в коде KVM AMD для поддержки вложенной виртуализации SVM. Эксплуатация уязвимости может позволить нарушителю, повысить свои привилегии

Severity

6.8 (Medium) CVSS 2.0


                      
                        AV:N/AC:H/Au:S/C:C/I:C/A:C

8.8 (High) CVSS 3.0


                      
                        CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Class

Code vulnerability

Status

Confirmed by the vendor

Exploitation

Authorization bypass

Incidents

Being clarified

Remediation

Software update

CWE

CWE-264 - Разрешения, привилегии и средства управления доступом
CWE-862 - Отсутствие авторизации

Aliases

CVE-2021-3656

References

33 references

URL
https://access.redhat.com/security/cve/cve-2021-3656
https://bugzilla.redhat.com/show_bug.cgi?id=1983988
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3656
https://git.kernel.org/pub/scm/virt/kvm/kvm.git/commit/?id=c7dfa4009965a9b2d7b3…
https://github.com/torvalds/linux/commit/89c8a4984fc9
https://github.com/torvalds/linux/commit/c7dfa4009965a9b2d7b329ee970eb8da0d32f0bc
https://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.245
https://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.205
https://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.60
https://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13.12
https://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.142
https://linux.oracle.com/cve/CVE-2021-3656.html
https://redos.red-soft.ru/support/secure/
https://seclists.org/oss-sec/2021/q3/102
https://security.ublinux.ru/CVE-2021-3656
https://security-tracker.debian.org/tracker/CVE-2021-3656
https://ubuntu.com/security/CVE-2021-3656
https://ubuntu.com/security/notices/USN-5070-1
https://ubuntu.com/security/notices/USN-5071-1
https://ubuntu.com/security/notices/USN-5071-2
https://ubuntu.com/security/notices/USN-5072-1
https://ubuntu.com/security/notices/USN-5073-1
https://ubuntu.com/security/notices/USN-5073-2
https://ubuntu.com/security/notices/USN-5082-1
https://wiki.astralinux.ru/astra-linux-se16-bulletin-20220829SE16
https://wiki.astralinux.ru/astra-linux-se17-bulletin-2022-0819SE17
https://wiki.astralinux.ru/astra-linux-se47-bulletin-2022-0926SE47
https://www.cve.org/CVERecord?id=CVE-2021-3656
https://www.cybersecurity-help.cz/vdb/SB2021092810
https://www.openwall.com/lists/oss-security/2021/08/16/1
https://www.suse.com/security/cve/CVE-2021-3656.html
https://altsp.su/obnovleniya-bezopasnosti/
https://wiki.astralinux.ru/astra-linux-se81-bulletin-20241206SE81

Impacted products

11 products from 10 vendors

Vendors

Red Hat, Inc., Сообщество свободного программного обеспечения, Canonical Ltd., ООО «РусБИТех-Астра», Oracle Corp., Novell Inc., ООО «Ред Софт», АО «ИВК», ООО «Юбитех»

Products

Red Hat Enterprise Linux, Debian GNU/Linux, Ubuntu, Astra Linux Special Edition (запись в едином реестре российских программ №369), Oracle Linux, Astra Linux Special Edition для «Эльбрус» (запись в едином реестре российских программ №11156), SUSE Linux Enterprise, РЕД ОС (запись в едином реестре российских программ №3751), Альт 8 СП (запись в едином реестре российских программ №4305), UBLinux (запись в едином реестре российских программ №6874), Linux

Versions

7 (Red Hat Enterprise Linux), 9 (Debian GNU/Linux), 18.04 LTS (Ubuntu), 1.6 «Смоленск» (Astra Linux Special Edition), 7 (Oracle Linux), 8 (Red Hat Enterprise Linux), 10 (Debian GNU/Linux), 8.1 «Ленинград» (Astra Linux Special Edition для «Эльбрус»), 20.04 LTS (Ubuntu), 8.2 Extended Update Support (Red Hat Enterprise Linux), High Performance Computing 15-LTSS (SUSE Linux Enterprise), 8 (Oracle Linux), High Performance Computing 15 SP1-ESPOS (SUSE Linux Enterprise), High Performance Computing 15 SP1-LTSS (SUSE Linux Enterprise), 7.6 Telco Extended Update Support (Red Hat Enterprise Linux), 7.6 Advanced Update Support (Red Hat Enterprise Linux), 7.6 Update Services for SAP Solutions (Red Hat Enterprise Linux), 7.7 Advanced Update Support (Red Hat Enterprise Linux), 11 (Debian GNU/Linux), 12 (Debian GNU/Linux), 7.3 (РЕД ОС), 1.7 (Astra Linux Special Edition), Desktop 15 SP3 (SUSE Linux Enterprise), Desktop 15 SP4 (SUSE Linux Enterprise), High Performance Computing 12 SP5 (SUSE Linux Enterprise), High Performance Computing 15 SP2 (SUSE Linux Enterprise), High Performance Computing 15 SP2 ESPOS (SUSE Linux Enterprise), High Performance Computing 15 SP2 LTSS (SUSE Linux Enterprise), High Performance Computing 15 SP3 (SUSE Linux Enterprise), Desktop 15 SP2 (SUSE Linux Enterprise), High Performance Computing 15 (SUSE Linux Enterprise), High Performance Computing 15 SP1 (SUSE Linux Enterprise), - (Альт 8 СП), 4.7 (Astra Linux Special Edition), до 2204 (UBLinux), от 5.11 до 5.13.11 включительно (Linux), от 4.13 до 4.14.244 включительно (Linux), от 4.15 до 4.19.204 включительно (Linux), от 4.20 до 5.4.141 включительно (Linux), от 5.5 до 5.10.59 включительно (Linux)

Product types

Operating system

Platforms

Red Hat, Inc. Red Hat Enterprise Linux 7 IA-32, Сообщество свободного программного обеспечения Debian GNU/Linux 9, Canonical Ltd. Ubuntu 18.04 LTS, ООО «РусБИТех-Астра» Astra Linux Special Edition 1.6 «Смоленск» (запись в едином реестре российских программ №369), Oracle Corp. Oracle Linux 7, Inc. Red Hat Enterprise Linux 8, Сообщество свободного программного обеспечения Debian GNU/Linux 10, ООО «РусБИТех-Астра» Astra Linux Special Edition для «Эльбрус» 8.1 «Ленинград» (запись в едином реестре российских программ №11156), Canonical Ltd. Ubuntu 20.04 LTS, Inc. Red Hat Enterprise Linux 8.2 Extended Update Support, Novell Inc. SUSE Linux Enterprise High Performance Computing 15-LTSS, Oracle Corp. Oracle Linux 8, Novell Inc. SUSE Linux Enterprise High Performance Computing 15 SP1-ESPOS, Novell Inc. SUSE Linux Enterprise High Performance Computing 15 SP1-LTSS, Inc. Red Hat Enterprise Linux 7.6 Telco Extended Update Support, Inc. Red Hat Enterprise Linux 7.6 Advanced Update Support, Inc. Red Hat Enterprise Linux 7.6 Update Services for SAP Solutions, Inc. Red Hat Enterprise Linux 7.7 Advanced Update Support, Сообщество свободного программного обеспечения Linux до 5.14, Сообщество свободного программного обеспечения Debian GNU/Linux 11, Сообщество свободного программного обеспечения Debian GNU/Linux 12, ООО «Ред Софт» РЕД ОС 7.3 (запись в едином реестре российских программ №3751), ООО «РусБИТех-Астра» Astra Linux Special Edition 1.7 (запись в едином реестре российских программ №369), Novell Inc. SUSE Linux Enterprise Desktop 15 SP3, Novell Inc. SUSE Linux Enterprise Desktop 15 SP4, Novell Inc. SUSE Linux Enterprise High Performance Computing 12 SP5, Novell Inc. SUSE Linux Enterprise High Performance Computing 15 SP2, Novell Inc. SUSE Linux Enterprise High Performance Computing 15 SP2 ESPOS, Novell Inc. SUSE Linux Enterprise High Performance Computing 15 SP2 LTSS, Novell Inc. SUSE Linux Enterprise High Performance Computing 15 SP3, Novell Inc. SUSE Linux Enterprise Desktop 15 SP2, Novell Inc. SUSE Linux Enterprise High Performance Computing 15, Novell Inc. SUSE Linux Enterprise High Performance Computing 15 SP1, АО «ИВК» Альт 8 СП - (запись в едином реестре российских программ №4305), ООО «РусБИТех-Астра» Astra Linux Special Edition 4.7 ARM (запись в едином реестре российских программ №369), ООО «Юбитех» UBLinux до 2204 (запись в едином реестре российских программ №6874)

Mitigations

Использование рекомендаций: Для РедОС: http://repo.red-soft.ru/redos/7.3c/x86_64/updates/ Для Linux: https://git.kernel.org/pub/scm/virt/kvm/kvm.git/commit/?id=c7dfa4009965a9b2d7b329ee970eb8da0d32f0bc https://github.com/torvalds/linux/commit/89c8a4984fc9 https://github.com/torvalds/linux/commit/c7dfa4009965a9b2d7b329ee970eb8da0d32f0bc https://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.245 https://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.205 https://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.60 https://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13.12 https://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.142 Для Debian GNU/Linux: https://security-tracker.debian.org/tracker/CVE-2021-3656 Для программных продуктов Novell Inc.: https://www.suse.com/security/cve/CVE-2021-3656.html Для программных продуктов Red Hat Inc.: https://access.redhat.com/security/cve/cve-2021-3656 Для Ubuntu: https://ubuntu.com/security/CVE-2021-3656 Для Oracle Linux.: https://linux.oracle.com/cve/CVE-2021-3656.html Для UBLinux: https://security.ublinux.ru/CVE-2021-3656 Для ОС Astra Linux: использование рекомендаций производителя: https://wiki.astralinux.ru/astra-linux-se17-bulletin-2022-0819SE17 https://wiki.astralinux.ru/astra-linux-se16-bulletin-20220829SE16 Для Astra Linux Special Edition 4.7 (для архитектуры ARM): использование рекомендаций производителя: https://wiki.astralinux.ru/astra-linux-se47-bulletin-2022-0926SE47 Для ОС Альт 8 СП: установка обновления из публичного репозитория программного средства Для ОС Astra Linux: использование рекомендаций производителя: https://wiki.astralinux.ru/astra-linux-se81-bulletin-20241206SE81

JSON

To clipboard

{
  "CVSS 2.0": "AV:N/AC:H/Au:S/C:C/I:C/A:C",
  "CVSS 3.0": "AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
  "CVSS 4.0": null,
  "remediation_\u0418\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440": null,
  "remediation_\u041d\u0430\u0438\u043c\u0435\u043d\u043e\u0432\u0430\u043d\u0438\u0435": null,
  "\u0412\u0435\u043d\u0434\u043e\u0440 \u041f\u041e": "Red Hat, Inc., \u0421\u043e\u043e\u0431\u0449\u0435\u0441\u0442\u0432\u043e \u0441\u0432\u043e\u0431\u043e\u0434\u043d\u043e\u0433\u043e \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f, Canonical Ltd., \u041e\u041e\u041e \u00ab\u0420\u0443\u0441\u0411\u0418\u0422\u0435\u0445-\u0410\u0441\u0442\u0440\u0430\u00bb, Oracle Corp., Novell Inc., \u041e\u041e\u041e \u00ab\u0420\u0435\u0434 \u0421\u043e\u0444\u0442\u00bb, \u0410\u041e \u00ab\u0418\u0412\u041a\u00bb, \u041e\u041e\u041e \u00ab\u042e\u0431\u0438\u0442\u0435\u0445\u00bb",
  "\u0412\u0435\u0440\u0441\u0438\u044f \u041f\u041e": "7 (Red Hat Enterprise Linux), 9 (Debian GNU/Linux), 18.04 LTS (Ubuntu), 1.6 \u00ab\u0421\u043c\u043e\u043b\u0435\u043d\u0441\u043a\u00bb (Astra Linux Special Edition), 7 (Oracle Linux), 8 (Red Hat Enterprise Linux), 10 (Debian GNU/Linux), 8.1 \u00ab\u041b\u0435\u043d\u0438\u043d\u0433\u0440\u0430\u0434\u00bb (Astra Linux Special Edition \u0434\u043b\u044f \u00ab\u042d\u043b\u044c\u0431\u0440\u0443\u0441\u00bb), 20.04 LTS (Ubuntu), 8.2 Extended Update Support (Red Hat Enterprise Linux), High Performance Computing 15-LTSS (SUSE Linux Enterprise), 8 (Oracle Linux), High Performance Computing 15 SP1-ESPOS (SUSE Linux Enterprise), High Performance Computing 15 SP1-LTSS (SUSE Linux Enterprise), 7.6 Telco Extended Update Support (Red Hat Enterprise Linux), 7.6 Advanced Update Support (Red Hat Enterprise Linux), 7.6 Update Services for SAP Solutions (Red Hat Enterprise Linux), 7.7 Advanced Update Support (Red Hat Enterprise Linux), 11 (Debian GNU/Linux), 12 (Debian GNU/Linux), 7.3 (\u0420\u0415\u0414 \u041e\u0421), 1.7 (Astra Linux Special Edition), Desktop 15 SP3 (SUSE Linux Enterprise), Desktop 15 SP4 (SUSE Linux Enterprise), High Performance Computing 12 SP5 (SUSE Linux Enterprise), High Performance Computing 15 SP2 (SUSE Linux Enterprise), High Performance Computing 15 SP2 ESPOS (SUSE Linux Enterprise), High Performance Computing 15 SP2 LTSS (SUSE Linux Enterprise), High Performance Computing 15 SP3 (SUSE Linux Enterprise), Desktop 15 SP2 (SUSE Linux Enterprise), High Performance Computing 15 (SUSE Linux Enterprise), High Performance Computing 15 SP1 (SUSE Linux Enterprise), - (\u0410\u043b\u044c\u0442 8 \u0421\u041f), 4.7 (Astra Linux Special Edition), \u0434\u043e 2204 (UBLinux), \u043e\u0442 5.11 \u0434\u043e 5.13.11 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e (Linux), \u043e\u0442 4.13 \u0434\u043e 4.14.244 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e (Linux), \u043e\u0442 4.15 \u0434\u043e 4.19.204 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e (Linux), \u043e\u0442 4.20 \u0434\u043e 5.4.141 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e (Linux), \u043e\u0442 5.5 \u0434\u043e 5.10.59 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e (Linux)",
  "\u0412\u043e\u0437\u043c\u043e\u0436\u043d\u044b\u0435 \u043c\u0435\u0440\u044b \u043f\u043e \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u044e": "\u0418\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435 \u0440\u0435\u043a\u043e\u043c\u0435\u043d\u0434\u0430\u0446\u0438\u0439:\n\u0414\u043b\u044f \u0420\u0435\u0434\u041e\u0421:\nhttp://repo.red-soft.ru/redos/7.3c/x86_64/updates/\n\n\u0414\u043b\u044f Linux:\nhttps://git.kernel.org/pub/scm/virt/kvm/kvm.git/commit/?id=c7dfa4009965a9b2d7b329ee970eb8da0d32f0bc\nhttps://github.com/torvalds/linux/commit/89c8a4984fc9\nhttps://github.com/torvalds/linux/commit/c7dfa4009965a9b2d7b329ee970eb8da0d32f0bc\nhttps://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.245\nhttps://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.205\nhttps://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.60\nhttps://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13.12\nhttps://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.142\n\n\u0414\u043b\u044f Debian GNU/Linux:\nhttps://security-tracker.debian.org/tracker/CVE-2021-3656\n\n\u0414\u043b\u044f \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u044b\u0445 \u043f\u0440\u043e\u0434\u0443\u043a\u0442\u043e\u0432 Novell Inc.:\nhttps://www.suse.com/security/cve/CVE-2021-3656.html\n\n\u0414\u043b\u044f \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u044b\u0445 \u043f\u0440\u043e\u0434\u0443\u043a\u0442\u043e\u0432 Red Hat Inc.:\nhttps://access.redhat.com/security/cve/cve-2021-3656\n\n\u0414\u043b\u044f Ubuntu:\nhttps://ubuntu.com/security/CVE-2021-3656\n\n\u0414\u043b\u044f Oracle Linux.:\nhttps://linux.oracle.com/cve/CVE-2021-3656.html\n\n\u0414\u043b\u044f UBLinux:\nhttps://security.ublinux.ru/CVE-2021-3656\n\n\u0414\u043b\u044f \u041e\u0421 Astra Linux:\n\u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435 \u0440\u0435\u043a\u043e\u043c\u0435\u043d\u0434\u0430\u0446\u0438\u0439 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044f:\nhttps://wiki.astralinux.ru/astra-linux-se17-bulletin-2022-0819SE17\nhttps://wiki.astralinux.ru/astra-linux-se16-bulletin-20220829SE16\n\n\u0414\u043b\u044f Astra Linux Special Edition 4.7 (\u0434\u043b\u044f \u0430\u0440\u0445\u0438\u0442\u0435\u043a\u0442\u0443\u0440\u044b ARM):\n\u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435 \u0440\u0435\u043a\u043e\u043c\u0435\u043d\u0434\u0430\u0446\u0438\u0439 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044f: https://wiki.astralinux.ru/astra-linux-se47-bulletin-2022-0926SE47\n\n\u0414\u043b\u044f \u041e\u0421 \u0410\u043b\u044c\u0442 8 \u0421\u041f: \u0443\u0441\u0442\u0430\u043d\u043e\u0432\u043a\u0430 \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u044f \u0438\u0437 \u043f\u0443\u0431\u043b\u0438\u0447\u043d\u043e\u0433\u043e \u0440\u0435\u043f\u043e\u0437\u0438\u0442\u043e\u0440\u0438\u044f \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u0441\u0440\u0435\u0434\u0441\u0442\u0432\u0430\n\n\u0414\u043b\u044f \u041e\u0421 Astra Linux:\n\u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435 \u0440\u0435\u043a\u043e\u043c\u0435\u043d\u0434\u0430\u0446\u0438\u0439 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044f: https://wiki.astralinux.ru/astra-linux-se81-bulletin-20241206SE81",
  "\u0414\u0430\u0442\u0430 \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0438\u044f": "16.08.2021",
  "\u0414\u0430\u0442\u0430 \u043f\u043e\u0441\u043b\u0435\u0434\u043d\u0435\u0433\u043e \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u044f": "11.02.2025",
  "\u0414\u0430\u0442\u0430 \u043f\u0443\u0431\u043b\u0438\u043a\u0430\u0446\u0438\u0438": "09.02.2022",
  "\u0418\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440": "BDU:2022-00683",
  "\u0418\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440\u044b \u0434\u0440\u0443\u0433\u0438\u0445 \u0441\u0438\u0441\u0442\u0435\u043c \u043e\u043f\u0438\u0441\u0430\u043d\u0438\u0439 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "CVE-2021-3656",
  "\u0418\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u044f \u043e\u0431 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u0438": "\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0430",
  "\u041a\u043b\u0430\u0441\u0441 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u043a\u043e\u0434\u0430",
  "\u041d\u0430\u0437\u0432\u0430\u043d\u0438\u0435 \u041f\u041e": "Red Hat Enterprise Linux, Debian GNU/Linux, Ubuntu, Astra Linux Special Edition (\u0437\u0430\u043f\u0438\u0441\u044c \u0432 \u0435\u0434\u0438\u043d\u043e\u043c \u0440\u0435\u0435\u0441\u0442\u0440\u0435 \u0440\u043e\u0441\u0441\u0438\u0439\u0441\u043a\u0438\u0445 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c \u2116369), Oracle Linux, Astra Linux Special Edition \u0434\u043b\u044f \u00ab\u042d\u043b\u044c\u0431\u0440\u0443\u0441\u00bb (\u0437\u0430\u043f\u0438\u0441\u044c \u0432 \u0435\u0434\u0438\u043d\u043e\u043c \u0440\u0435\u0435\u0441\u0442\u0440\u0435 \u0440\u043e\u0441\u0441\u0438\u0439\u0441\u043a\u0438\u0445 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c \u211611156), SUSE Linux Enterprise, \u0420\u0415\u0414 \u041e\u0421 (\u0437\u0430\u043f\u0438\u0441\u044c \u0432 \u0435\u0434\u0438\u043d\u043e\u043c \u0440\u0435\u0435\u0441\u0442\u0440\u0435 \u0440\u043e\u0441\u0441\u0438\u0439\u0441\u043a\u0438\u0445 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c \u21163751), \u0410\u043b\u044c\u0442 8 \u0421\u041f (\u0437\u0430\u043f\u0438\u0441\u044c \u0432 \u0435\u0434\u0438\u043d\u043e\u043c \u0440\u0435\u0435\u0441\u0442\u0440\u0435 \u0440\u043e\u0441\u0441\u0438\u0439\u0441\u043a\u0438\u0445 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c \u21164305), UBLinux (\u0437\u0430\u043f\u0438\u0441\u044c \u0432 \u0435\u0434\u0438\u043d\u043e\u043c \u0440\u0435\u0435\u0441\u0442\u0440\u0435 \u0440\u043e\u0441\u0441\u0438\u0439\u0441\u043a\u0438\u0445 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c \u21166874), Linux",
  "\u041d\u0430\u0438\u043c\u0435\u043d\u043e\u0432\u0430\u043d\u0438\u0435 \u041e\u0421 \u0438 \u0442\u0438\u043f \u0430\u043f\u043f\u0430\u0440\u0430\u0442\u043d\u043e\u0439 \u043f\u043b\u0430\u0442\u0444\u043e\u0440\u043c\u044b": "Red Hat, Inc. Red Hat Enterprise Linux 7 IA-32, \u0421\u043e\u043e\u0431\u0449\u0435\u0441\u0442\u0432\u043e \u0441\u0432\u043e\u0431\u043e\u0434\u043d\u043e\u0433\u043e \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f Debian GNU/Linux 9 , Canonical Ltd. Ubuntu 18.04 LTS , \u041e\u041e\u041e \u00ab\u0420\u0443\u0441\u0411\u0418\u0422\u0435\u0445-\u0410\u0441\u0442\u0440\u0430\u00bb Astra Linux Special Edition 1.6 \u00ab\u0421\u043c\u043e\u043b\u0435\u043d\u0441\u043a\u00bb  (\u0437\u0430\u043f\u0438\u0441\u044c \u0432 \u0435\u0434\u0438\u043d\u043e\u043c \u0440\u0435\u0435\u0441\u0442\u0440\u0435 \u0440\u043e\u0441\u0441\u0438\u0439\u0441\u043a\u0438\u0445 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c \u2116369), Oracle Corp. Oracle Linux 7 , Red Hat, Inc. Red Hat Enterprise Linux 8 , \u0421\u043e\u043e\u0431\u0449\u0435\u0441\u0442\u0432\u043e \u0441\u0432\u043e\u0431\u043e\u0434\u043d\u043e\u0433\u043e \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f Debian GNU/Linux 10 , \u041e\u041e\u041e \u00ab\u0420\u0443\u0441\u0411\u0418\u0422\u0435\u0445-\u0410\u0441\u0442\u0440\u0430\u00bb Astra Linux Special Edition \u0434\u043b\u044f \u00ab\u042d\u043b\u044c\u0431\u0440\u0443\u0441\u00bb 8.1 \u00ab\u041b\u0435\u043d\u0438\u043d\u0433\u0440\u0430\u0434\u00bb  (\u0437\u0430\u043f\u0438\u0441\u044c \u0432 \u0435\u0434\u0438\u043d\u043e\u043c \u0440\u0435\u0435\u0441\u0442\u0440\u0435 \u0440\u043e\u0441\u0441\u0438\u0439\u0441\u043a\u0438\u0445 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c \u211611156), Canonical Ltd. Ubuntu 20.04 LTS , Red Hat, Inc. Red Hat Enterprise Linux 8.2 Extended Update Support , Novell Inc. SUSE Linux Enterprise High Performance Computing 15-LTSS , Oracle Corp. Oracle Linux 8 , Novell Inc. SUSE Linux Enterprise High Performance Computing 15 SP1-ESPOS , Novell Inc. SUSE Linux Enterprise High Performance Computing 15 SP1-LTSS , Red Hat, Inc. Red Hat Enterprise Linux 7.6 Telco Extended Update Support , Red Hat, Inc. Red Hat Enterprise Linux 7.6 Advanced Update Support , Red Hat, Inc. Red Hat Enterprise Linux 7.6 Update Services for SAP Solutions , Red Hat, Inc. Red Hat Enterprise Linux 7.7 Advanced Update Support , \u0421\u043e\u043e\u0431\u0449\u0435\u0441\u0442\u0432\u043e \u0441\u0432\u043e\u0431\u043e\u0434\u043d\u043e\u0433\u043e \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f Linux \u0434\u043e 5.14 , \u0421\u043e\u043e\u0431\u0449\u0435\u0441\u0442\u0432\u043e \u0441\u0432\u043e\u0431\u043e\u0434\u043d\u043e\u0433\u043e \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f Debian GNU/Linux 11 , \u0421\u043e\u043e\u0431\u0449\u0435\u0441\u0442\u0432\u043e \u0441\u0432\u043e\u0431\u043e\u0434\u043d\u043e\u0433\u043e \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f Debian GNU/Linux 12 , \u041e\u041e\u041e \u00ab\u0420\u0435\u0434 \u0421\u043e\u0444\u0442\u00bb \u0420\u0415\u0414 \u041e\u0421 7.3  (\u0437\u0430\u043f\u0438\u0441\u044c \u0432 \u0435\u0434\u0438\u043d\u043e\u043c \u0440\u0435\u0435\u0441\u0442\u0440\u0435 \u0440\u043e\u0441\u0441\u0438\u0439\u0441\u043a\u0438\u0445 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c \u21163751), \u041e\u041e\u041e \u00ab\u0420\u0443\u0441\u0411\u0418\u0422\u0435\u0445-\u0410\u0441\u0442\u0440\u0430\u00bb Astra Linux Special Edition 1.7  (\u0437\u0430\u043f\u0438\u0441\u044c \u0432 \u0435\u0434\u0438\u043d\u043e\u043c \u0440\u0435\u0435\u0441\u0442\u0440\u0435 \u0440\u043e\u0441\u0441\u0438\u0439\u0441\u043a\u0438\u0445 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c \u2116369), Novell Inc. SUSE Linux Enterprise Desktop 15 SP3 , Novell Inc. SUSE Linux Enterprise Desktop 15 SP4 , Novell Inc. SUSE Linux Enterprise High Performance Computing 12 SP5 , Novell Inc. SUSE Linux Enterprise High Performance Computing 15 SP2 , Novell Inc. SUSE Linux Enterprise High Performance Computing 15 SP2 ESPOS , Novell Inc. SUSE Linux Enterprise High Performance Computing 15 SP2 LTSS , Novell Inc. SUSE Linux Enterprise High Performance Computing 15 SP3 , Novell Inc. SUSE Linux Enterprise Desktop 15 SP2 , Novell Inc. SUSE Linux Enterprise High Performance Computing 15 , Novell Inc. SUSE Linux Enterprise High Performance Computing 15 SP1 , \u0410\u041e \u00ab\u0418\u0412\u041a\u00bb \u0410\u043b\u044c\u0442 8 \u0421\u041f -  (\u0437\u0430\u043f\u0438\u0441\u044c \u0432 \u0435\u0434\u0438\u043d\u043e\u043c \u0440\u0435\u0435\u0441\u0442\u0440\u0435 \u0440\u043e\u0441\u0441\u0438\u0439\u0441\u043a\u0438\u0445 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c \u21164305), \u041e\u041e\u041e \u00ab\u0420\u0443\u0441\u0411\u0418\u0422\u0435\u0445-\u0410\u0441\u0442\u0440\u0430\u00bb Astra Linux Special Edition 4.7 ARM (\u0437\u0430\u043f\u0438\u0441\u044c \u0432 \u0435\u0434\u0438\u043d\u043e\u043c \u0440\u0435\u0435\u0441\u0442\u0440\u0435 \u0440\u043e\u0441\u0441\u0438\u0439\u0441\u043a\u0438\u0445 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c \u2116369), \u041e\u041e\u041e \u00ab\u042e\u0431\u0438\u0442\u0435\u0445\u00bb UBLinux \u0434\u043e 2204  (\u0437\u0430\u043f\u0438\u0441\u044c \u0432 \u0435\u0434\u0438\u043d\u043e\u043c \u0440\u0435\u0435\u0441\u0442\u0440\u0435 \u0440\u043e\u0441\u0441\u0438\u0439\u0441\u043a\u0438\u0445 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c \u21166874)",
  "\u041d\u0430\u0438\u043c\u0435\u043d\u043e\u0432\u0430\u043d\u0438\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u044f\u0434\u0440\u0430 \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u043e\u043d\u043d\u043e\u0439 \u0441\u0438\u0441\u0442\u0435\u043c\u044b Linux, \u0441\u0432\u044f\u0437\u0430\u043d\u043d\u0430\u044f \u0441 \u043d\u0435\u0434\u043e\u0441\u0442\u0430\u0442\u043a\u0430\u043c\u0438 \u0440\u0430\u0437\u0433\u0440\u0430\u043d\u0438\u0447\u0435\u043d\u0438\u044f \u0434\u043e\u0441\u0442\u0443\u043f\u0430, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0430\u044f \u043d\u0430\u0440\u0443\u0448\u0438\u0442\u0435\u043b\u044e \u043f\u043e\u0432\u044b\u0441\u0438\u0442\u044c \u0441\u0432\u043e\u0438 \u043f\u0440\u0438\u0432\u0438\u043b\u0435\u0433\u0438\u0438",
  "\u041d\u0430\u043b\u0438\u0447\u0438\u0435 \u044d\u043a\u0441\u043f\u043b\u043e\u0439\u0442\u0430": "\u0414\u0430\u043d\u043d\u044b\u0435 \u0443\u0442\u043e\u0447\u043d\u044f\u044e\u0442\u0441\u044f",
  "\u041e\u043f\u0438\u0441\u0430\u043d\u0438\u0435 \u043e\u0448\u0438\u0431\u043a\u0438 CWE": "\u0420\u0430\u0437\u0440\u0435\u0448\u0435\u043d\u0438\u044f, \u043f\u0440\u0438\u0432\u0438\u043b\u0435\u0433\u0438\u0438 \u0438 \u0441\u0440\u0435\u0434\u0441\u0442\u0432\u0430 \u0443\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u0438\u044f \u0434\u043e\u0441\u0442\u0443\u043f\u043e\u043c (CWE-264), \u041e\u0442\u0441\u0443\u0442\u0441\u0442\u0432\u0438\u0435 \u0430\u0432\u0442\u043e\u0440\u0438\u0437\u0430\u0446\u0438\u0438 (CWE-862)",
  "\u041e\u043f\u0438\u0441\u0430\u043d\u0438\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u044f\u0434\u0440\u0430 \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u043e\u043d\u043d\u043e\u0439 \u0441\u0438\u0441\u0442\u0435\u043c\u044b Linux \u0441\u0432\u044f\u0437\u0430\u043d\u0430 \u0441 \u043d\u0435\u043f\u0440\u0430\u0432\u0438\u043b\u044c\u043d\u043e \u043d\u0430\u043b\u043e\u0436\u0435\u043d\u043d\u044b\u043c\u0438 \u043e\u0433\u0440\u0430\u043d\u0438\u0447\u0435\u043d\u0438\u044f\u043c\u0438 \u0431\u0435\u0437\u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 \u0432 \u043a\u043e\u0434\u0435 KVM AMD \u0434\u043b\u044f \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u0438 \u0432\u043b\u043e\u0436\u0435\u043d\u043d\u043e\u0439 \u0432\u0438\u0440\u0442\u0443\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0438 SVM. \u042d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0430\u0446\u0438\u044f \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 \u043c\u043e\u0436\u0435\u0442 \u043f\u043e\u0437\u0432\u043e\u043b\u0438\u0442\u044c \u043d\u0430\u0440\u0443\u0448\u0438\u0442\u0435\u043b\u044e, \u043f\u043e\u0432\u044b\u0441\u0438\u0442\u044c \u0441\u0432\u043e\u0438 \u043f\u0440\u0438\u0432\u0438\u043b\u0435\u0433\u0438\u0438",
  "\u041f\u043e\u0441\u043b\u0435\u0434\u0441\u0442\u0432\u0438\u044f \u044d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0430\u0446\u0438\u0438 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": null,
  "\u041f\u0440\u043e\u0447\u0430\u044f \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u044f": null,
  "\u0421\u0432\u044f\u0437\u044c \u0441 \u0438\u043d\u0446\u0438\u0434\u0435\u043d\u0442\u0430\u043c\u0438 \u0418\u0411": "\u0414\u0430\u043d\u043d\u044b\u0435 \u0443\u0442\u043e\u0447\u043d\u044f\u044e\u0442\u0441\u044f",
  "\u0421\u043e\u0441\u0442\u043e\u044f\u043d\u0438\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u041e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d\u0430",
  "\u0421\u043f\u043e\u0441\u043e\u0431 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u044f": "\u041e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u0435 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f",
  "\u0421\u043f\u043e\u0441\u043e\u0431 \u044d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0430\u0446\u0438\u0438": "\u041d\u0430\u0440\u0443\u0448\u0435\u043d\u0438\u0435 \u0430\u0432\u0442\u043e\u0440\u0438\u0437\u0430\u0446\u0438\u0438",
  "\u0421\u0441\u044b\u043b\u043a\u0438 \u043d\u0430 \u0438\u0441\u0442\u043e\u0447\u043d\u0438\u043a\u0438": "https://access.redhat.com/security/cve/cve-2021-3656\nhttps://bugzilla.redhat.com/show_bug.cgi?id=1983988\nhttps://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3656\nhttps://git.kernel.org/pub/scm/virt/kvm/kvm.git/commit/?id=c7dfa4009965a9b2d7b329ee970eb8da0d32f0bc\nhttps://github.com/torvalds/linux/commit/89c8a4984fc9\nhttps://github.com/torvalds/linux/commit/c7dfa4009965a9b2d7b329ee970eb8da0d32f0bc\nhttps://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.245\nhttps://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.205\nhttps://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.60\nhttps://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13.12\nhttps://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.142\nhttps://linux.oracle.com/cve/CVE-2021-3656.html\nhttps://redos.red-soft.ru/support/secure/\nhttps://seclists.org/oss-sec/2021/q3/102\nhttps://security.ublinux.ru/CVE-2021-3656\nhttps://security-tracker.debian.org/tracker/CVE-2021-3656\nhttps://ubuntu.com/security/CVE-2021-3656\nhttps://ubuntu.com/security/notices/USN-5070-1\nhttps://ubuntu.com/security/notices/USN-5071-1\nhttps://ubuntu.com/security/notices/USN-5071-2\nhttps://ubuntu.com/security/notices/USN-5072-1\nhttps://ubuntu.com/security/notices/USN-5073-1\nhttps://ubuntu.com/security/notices/USN-5073-2\nhttps://ubuntu.com/security/notices/USN-5082-1\nhttps://wiki.astralinux.ru/astra-linux-se16-bulletin-20220829SE16\nhttps://wiki.astralinux.ru/astra-linux-se17-bulletin-2022-0819SE17\nhttps://wiki.astralinux.ru/astra-linux-se47-bulletin-2022-0926SE47\nhttps://www.cve.org/CVERecord?id=CVE-2021-3656\nhttps://www.cybersecurity-help.cz/vdb/SB2021092810\nhttps://www.openwall.com/lists/oss-security/2021/08/16/1\nhttps://www.suse.com/security/cve/CVE-2021-3656.html\nhttps://altsp.su/obnovleniya-bezopasnosti/\nhttps://wiki.astralinux.ru/astra-linux-se81-bulletin-20241206SE81",
  "\u0421\u0442\u0430\u0442\u0443\u0441 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u041f\u043e\u0434\u0442\u0432\u0435\u0440\u0436\u0434\u0435\u043d\u0430 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u0435\u043c",
  "\u0422\u0438\u043f \u041f\u041e": "\u041e\u043f\u0435\u0440\u0430\u0446\u0438\u043e\u043d\u043d\u0430\u044f \u0441\u0438\u0441\u0442\u0435\u043c\u0430",
  "\u0422\u0438\u043f \u043e\u0448\u0438\u0431\u043a\u0438 CWE": "CWE-264, CWE-862",
  "\u0423\u0440\u043e\u0432\u0435\u043d\u044c \u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u0421\u0440\u0435\u0434\u043d\u0438\u0439 \u0443\u0440\u043e\u0432\u0435\u043d\u044c \u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 (\u0431\u0430\u0437\u043e\u0432\u0430\u044f \u043e\u0446\u0435\u043d\u043a\u0430 CVSS 2.0 \u0441\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 6,8)\n\u0412\u044b\u0441\u043e\u043a\u0438\u0439 \u0443\u0440\u043e\u0432\u0435\u043d\u044c \u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 (\u0431\u0430\u0437\u043e\u0432\u0430\u044f \u043e\u0446\u0435\u043d\u043a\u0430 CVSS 3.0 \u0441\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 8,8)"
}

CVE-2021-3656 (GCVE-0-2021-3656)

Vulnerability from cvelistv5 – Published: 2022-03-04 18:41 – Updated: 2024-08-03 17:01

Summary

A flaw was found in the KVM's AMD code for supporting SVM nested virtualization. The flaw occurs when processing the VMCB (virtual machine control block) provided by the L1 guest to spawn/handle a nested guest (L2). Due to improper validation of the "virt_ext" field, this issue could allow a malicious L1 to disable both VMLOAD/VMSAVE intercepts and VLS (Virtual VMLOAD/VMSAVE) for the L2 guest. As a result, the L2 guest would be allowed to read/write physical pages of the host, resulting in a crash of the entire system, leak of sensitive data or potential guest-to-host escape.

Severity

No CVSS data available.

CWE

CWE-862

Assigner

redhat redhat root Scorecard

References

4 references

URL	Tags
https://www.openwall.com/lists/oss-security/2021/…	x_refsource_MISC
https://git.kernel.org/pub/scm/virt/kvm/kvm.git/c…	x_refsource_MISC
https://github.com/torvalds/linux/commit/c7dfa400…	x_refsource_MISC
https://bugzilla.redhat.com/show_bug.cgi?id=1983988	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
n/a	KVM	Affected: Fixed-In v5.14-rc7 and above

Show details on NVD website

JSON

To clipboard

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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

BDU:2022-00683 (CVE-2021-3656)

CVE-2021-3656 (GCVE-0-2021-3656)

Tags

Sightings

Nomenclature

Related by attack behaviour