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ALSA-2021:4451 — Moderate: gnutls and nettle security, bug fix, and enhancement update

Affected: AlmaLinux:8: gnutls, AlmaLinux:8: gnutls-c++, AlmaLinux:8: gnutls-dane, AlmaLinux:8: gnutls-devel, AlmaLinux:8: gnutls-utils, AlmaLinux:8: nettle, AlmaLinux:8: nettle-devel

The gnutls packages provide the GNU Transport Layer Security (GnuTLS) library, which implements cryptographic algorithms and protocols such as SSL, TLS, and DTLS.

Nettle is a cryptographic library that is designed to fit easily in almost any context: In crypto toolkits for object-oriented languages, such as C++, Python, or Pike, in applications like LSH or GNUPG, or even in kernel space.

The following packages have been upgraded to a later upstream version: gnutls (3.6.16). (BZ#1956783)

Security Fix(es):

* nettle: Remote crash in RSA decryption via manipulated ciphertext (CVE-2021-3580)

* gnutls: Use after free in client key_share extension (CVE-2021-20231)

* gnutls: Use after free in client_send_params in lib/ext/pre_shared_key.c (CVE-2021-20232)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Additional Changes:

For detailed information on changes in this release, see the AlmaLinux Release Notes linked from the References section.

bdu:2022-00206

Withdrawn: BELL-CVE-2021-20231 — CVE-2021-20231 does not affect BellSoft software

Withdrawn by the publisher.

certfr-2022-avi-386 — De multiples vulnérabilités ont été découvertes dans IBM QRadar SIEM. Certaines d'entre elles permettent à un attaquant…

certfr-2022-avi-386

EUVD-2026-21495

fkie_cve-2021-20231

A flaw was found in gnutls. A use after free issue in client sending key_share extension may lead to memory corruption and other consequences.

GHSA-mqq9-xchh-h97q

A flaw was found in gnutls. A use after free issue in client sending key_share extension may lead to memory corruption and other consequences.

gsd-2021-20231

ICSA-23-348-10 — Siemens SIMATIC S7-1500

expat 2.1.0 and earlier does not properly handle entities expansion unless an application developer uses the XML_SetEntityDeclHandler function, which allows remote attackers to cause a denial of service (resource consumption), send HTTP requests to intranet servers, or read arbitrary files via a crafted XML document, aka an XML External Entity (XXE) issue. NOTE: it could be argued that because expat already provides the ability to disable external entity expansion, the responsibility for resolving this issue lies with application developers; according to this argument, this entry should be REJECTed, and each affected application would need its own CVE. shadow: TOCTOU (time-of-check time-of-use) race condition when copying and removing directory trees run-mailcap in the Debian mime-support package before 3.52-1+deb7u1 allows context-dependent attackers to execute arbitrary commands via shell metacharacters in a filename. In Python (aka CPython) up to 3.10.8, the mailcap module does not add escape characters into commands discovered in the system mailcap file. This may allow attackers to inject shell commands into applications that call mailcap.findmatch with untrusted input (if they lack validation of user-provided filenames or arguments). The fix is also back-ported to 3.7, 3.8, 3.9 Use-after-free vulnerability in bzip2recover in bzip2 1.0.6 allows remote attackers to cause a denial of service (crash) via a crafted bzip2 file, related to block ends set to before the start o…

msrc_CVE-2021-20231 — A flaw was found in gnutls. A use after free issue in client sending key_share extension may lead to memory corruption…

msrc_CVE-2021-20231

OESA-2021-1109 — gnutls security update

Affected: openEuler:20.03-LTS: gnutls, openEuler:20.03-LTS-SP1: gnutls

GnuTLS is a secure communications library implementing the SSL, TLS and DTLS protocols and technologies around them. It provides a simple C language application programming interface (API) to access the secure communications protocols as well as APIs to parse and write X.509, PKCS #12, and other required structures. The project strives to provide a secure communications back-end, simple to use and integrated with the rest of the base Linux libraries. A back-end designed to work and be secure out of the box, keeping the complexity of TLS and PKI out of application code. Security Fix(es): A flaw was found in gnutls. A use after free issue in client sending key_share extension may lead to memory corruption and other consequences.(CVE-2021-20231) A flaw was found in gnutls. A use after free issue in client_send_params in lib/ext/pre_shared_key.c may lead to memory corruption and other potential consequences.(CVE-2021-20232)

openSUSE-SU-2021:0470-1 — Security update for gnutls

Security update for gnutls

SUSE-SU-2021:0934-1 — Security update for gnutls

Security update for gnutls

UBUNTU-CVE-2021-20231

Affected: Ubuntu:20.04:LTS: gnutls28

A flaw was found in gnutls. A use after free issue in client sending key_share extension may lead to memory corruption and other consequences.

VDE-2022-010 — PHOENIX CONTACT: Multiple Linux component vulnerabilities fixed in latest AXC F x152 LTS release

PLCnext Control AXC F x152 is certified according to IEC 62443-4-1 and IEC 62443-4-2. This certification requires that all third-party components used in the firmware are regularly checked for known vulnerabilities.

Firmware components in version 2021.06 had already been updated. For the 2022.0 LTS version more firmware components have been updated implicitly fixing the vulnerabilities listed. The vulnerabilities listed above have not been individually verified in terms of actual impact and/or limitations in combination with the affected products listed. The current LTS release 2022.0 LTS contains updates of integrated third-party libraries, SDKs and other third-party software to address these issues nevertheless.

UPDATE A (April 4th, 2022): Added RFC 4072 (Art. No. 1051328) and fixed affected version of AXC F 3152

WID-SEC-W-2026-3127 — GnuTLS: Mehrere Schwachstellen

Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in GnuTLS ausnutzen, um beliebigen Programmcode auszuführen oder einen Denial of Service State herbeizuführen.