CWE-295
AllowedImproper Certificate Validation
Abstraction: Base · Status: Draft
The product does not validate, or incorrectly validates, a certificate.
2267 vulnerabilities reference this CWE, most recent first.
GHSA-PCX5-CM5R-CF7F
Vulnerability from github – Published: 2023-07-06 19:24 – Updated: 2024-04-04 05:34Dell EMC Unisphere for PowerMax versions before 9.1.0.27, Dell EMC Unisphere for PowerMax Virtual Appliance versions before 9.1.0.27, and PowerMax OS Release 5978 contain an improper certificate validation vulnerability. An unauthenticated remote attacker may potentially exploit this vulnerability to carry out a man-in-the-middle attack by supplying a crafted certificate and intercepting the victim's traffic to view or modify a victim’s data in transit.
{
"affected": [],
"aliases": [
"CVE-2021-21548"
],
"database_specific": {
"cwe_ids": [
"CWE-295"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-03-17T06:15:00Z",
"severity": "HIGH"
},
"details": "Dell EMC Unisphere for PowerMax versions before 9.1.0.27, Dell EMC Unisphere for PowerMax Virtual Appliance versions before 9.1.0.27, and PowerMax OS Release 5978 contain an improper certificate validation vulnerability. An unauthenticated remote attacker may potentially exploit this vulnerability to carry out a man-in-the-middle attack by supplying a crafted certificate and intercepting the victim\u0027s traffic to view or modify a victim\u2019s data in transit.",
"id": "GHSA-pcx5-cm5r-cf7f",
"modified": "2024-04-04T05:34:40Z",
"published": "2023-07-06T19:24:11Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-21548"
},
{
"type": "WEB",
"url": "https://www.dell.com/support/kbdoc/en-uk/000189606/dsa-2021-134-dell-emc-unisphere-for-powermax-dell-emc-unisphere-for-powermax-virtual-appliance-dell-emc-solutions-enabler-virtual-appliance-and-dell-emc-powermax-embedded-management-security-update-for-multiple-third-party-component-vulnerabilities"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-PF7C-MM8V-94PP
Vulnerability from github – Published: 2026-07-09 21:31 – Updated: 2026-07-16 15:32An improper certificate validation vulnerability in the Prisma® Access Agent for iOS enables an attacker to perform a man-in-the-middle (MitM) attack to intercept VPN traffic.
The Prisma Access Agent on Windows, macOS, Linux, Android and ChromeOS are not affected.
{
"affected": [],
"aliases": [
"CVE-2026-0277"
],
"database_specific": {
"cwe_ids": [
"CWE-295"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-07-09T20:16:24Z",
"severity": "MODERATE"
},
"details": "An improper certificate validation vulnerability in the Prisma\u00ae Access Agent for iOS enables an attacker to perform a man-in-the-middle (MitM) attack to intercept VPN traffic. \n\nThe Prisma Access Agent on Windows, macOS, Linux, Android and ChromeOS are not affected.",
"id": "GHSA-pf7c-mm8v-94pp",
"modified": "2026-07-16T15:32:58Z",
"published": "2026-07-09T21:31:21Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-0277"
},
{
"type": "WEB",
"url": "https://security.paloaltonetworks.com/CVE-2026-0277"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:N/R:U/V:D/RE:M/U:Amber",
"type": "CVSS_V4"
}
]
}
GHSA-PFC3-2W85-9453
Vulnerability from github – Published: 2022-05-24 16:45 – Updated: 2026-04-15 21:30In the client side of Heimdal before 7.6.0, failure to verify anonymous PKINIT PA-PKINIT-KX key exchange permits a man-in-the-middle attack. This issue is in krb5_init_creds_step in lib/krb5/init_creds_pw.c.
{
"affected": [],
"aliases": [
"CVE-2019-12098"
],
"database_specific": {
"cwe_ids": [
"CWE-295"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2019-05-15T23:29:00Z",
"severity": "HIGH"
},
"details": "In the client side of Heimdal before 7.6.0, failure to verify anonymous PKINIT PA-PKINIT-KX key exchange permits a man-in-the-middle attack. This issue is in krb5_init_creds_step in lib/krb5/init_creds_pw.c.",
"id": "GHSA-pfc3-2w85-9453",
"modified": "2026-04-15T21:30:13Z",
"published": "2022-05-24T16:45:54Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2019-12098"
},
{
"type": "WEB",
"url": "https://github.com/heimdal/heimdal/commit/2f7f3d9960aa6ea21358bdf3687cee5149aa35cf"
},
{
"type": "WEB",
"url": "https://github.com/heimdal/heimdal/compare/3e58559...bbafe72"
},
{
"type": "WEB",
"url": "https://github.com/heimdal/heimdal/releases/tag/heimdal-7.6.0"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GIXEDVVMPD6ZAJSMI2EZ7FNEIVNWE5PD"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SLXXIF4LOQEAEDAF4UGP2AO6WDNTDFUB"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GIXEDVVMPD6ZAJSMI2EZ7FNEIVNWE5PD"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/SLXXIF4LOQEAEDAF4UGP2AO6WDNTDFUB"
},
{
"type": "WEB",
"url": "https://seclists.org/bugtraq/2019/Jun/1"
},
{
"type": "WEB",
"url": "https://www.debian.org/security/2019/dsa-4455"
},
{
"type": "WEB",
"url": "http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00002.html"
},
{
"type": "WEB",
"url": "http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00003.html"
},
{
"type": "WEB",
"url": "http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00026.html"
},
{
"type": "WEB",
"url": "http://www.h5l.org/pipermail/heimdal-announce/2019-May/000009.html"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-PFH3-J79R-VQRJ
Vulnerability from github – Published: 2024-03-06 18:30 – Updated: 2024-11-12 21:41In Jenkins Delphix Plugin 3.0.1 through 3.1.0 (both inclusive) a global option for administrators to enable or disable SSL/TLS certificate validation for Data Control Tower (DCT) connections fails to take effect until Jenkins is restarted when switching from disabled validation to enabled validation.
{
"affected": [
{
"package": {
"ecosystem": "Maven",
"name": "org.jenkins-ci.plugins:delphix"
},
"ranges": [
{
"events": [
{
"introduced": "3.0.1"
},
{
"fixed": "3.1.1"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2024-28162"
],
"database_specific": {
"cwe_ids": [
"CWE-295"
],
"github_reviewed": true,
"github_reviewed_at": "2024-03-06T20:15:45Z",
"nvd_published_at": "2024-03-06T17:15:11Z",
"severity": "MODERATE"
},
"details": "In Jenkins Delphix Plugin 3.0.1 through 3.1.0 (both inclusive) a global option for administrators to enable or disable SSL/TLS certificate validation for Data Control Tower (DCT) connections fails to take effect until Jenkins is restarted when switching from disabled validation to enabled validation.",
"id": "GHSA-pfh3-j79r-vqrj",
"modified": "2024-11-12T21:41:12Z",
"published": "2024-03-06T18:30:39Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-28162"
},
{
"type": "WEB",
"url": "https://github.com/jenkinsci/delphix-plugin/commit/798a36148526dbf6028eb6443f193c8f02c75cf2"
},
{
"type": "PACKAGE",
"url": "https://github.com/jenkinsci/delphix-plugin"
},
{
"type": "WEB",
"url": "https://www.jenkins.io/security/advisory/2024-03-06/#SECURITY-3330"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2024/03/06/3"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N",
"type": "CVSS_V3"
}
],
"summary": "Jenkins Delphix Plugin has improper SSL/TLS certificate validation"
}
GHSA-PFV2-J9HC-M6F8
Vulnerability from github – Published: 2022-05-14 02:57 – Updated: 2025-04-20 03:39The Citizens Bank (TX) cbtx-on-the-go/id892396102 app 3.0.0 for iOS does not verify X.509 certificates from SSL servers, which allows man-in-the-middle attackers to spoof servers and obtain sensitive information via a crafted certificate.
{
"affected": [],
"aliases": [
"CVE-2017-9569"
],
"database_specific": {
"cwe_ids": [
"CWE-295"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2017-06-16T12:29:00Z",
"severity": "MODERATE"
},
"details": "The Citizens Bank (TX) cbtx-on-the-go/id892396102 app 3.0.0 for iOS does not verify X.509 certificates from SSL servers, which allows man-in-the-middle attackers to spoof servers and obtain sensitive information via a crafted certificate.",
"id": "GHSA-pfv2-j9hc-m6f8",
"modified": "2025-04-20T03:39:12Z",
"published": "2022-05-14T02:57:31Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2017-9569"
},
{
"type": "WEB",
"url": "https://medium.com/%40chronic_9612/advisory-44-credit-union-apps-for-ios-may-allow-login-credential-exposure-4d2f380b85c5"
},
{
"type": "WEB",
"url": "https://medium.com/@chronic_9612/advisory-44-credit-union-apps-for-ios-may-allow-login-credential-exposure-4d2f380b85c5"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-PFXG-W7QF-6X65
Vulnerability from github – Published: 2026-03-10 18:31 – Updated: 2026-03-10 18:31A improper certificate validation vulnerability in Fortinet FortiAnalyzer 7.6.0 through 7.6.4, FortiAnalyzer 7.4.0 through 7.4.8, FortiAnalyzer 7.2 all versions, FortiAnalyzer 7.0 all versions, FortiAnalyzer 6.4 all versions, FortiManager 7.6.0 through 7.6.4, FortiManager 7.4.0 through 7.4.8, FortiManager 7.2 all versions, FortiManager 7.0 all versions, FortiManager 6.4 all versions may allow a remote unauthenticated attacker to view confidential information via a man in the middle [MiTM] attack.
{
"affected": [],
"aliases": [
"CVE-2025-68482"
],
"database_specific": {
"cwe_ids": [
"CWE-295"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-03-10T18:17:59Z",
"severity": "MODERATE"
},
"details": "A improper certificate validation vulnerability in Fortinet FortiAnalyzer 7.6.0 through 7.6.4, FortiAnalyzer 7.4.0 through 7.4.8, FortiAnalyzer 7.2 all versions, FortiAnalyzer 7.0 all versions, FortiAnalyzer 6.4 all versions, FortiManager 7.6.0 through 7.6.4, FortiManager 7.4.0 through 7.4.8, FortiManager 7.2 all versions, FortiManager 7.0 all versions, FortiManager 6.4 all versions may allow a remote unauthenticated attacker to view confidential information via a man in the middle [MiTM] attack.",
"id": "GHSA-pfxg-w7qf-6x65",
"modified": "2026-03-10T18:31:18Z",
"published": "2026-03-10T18:31:18Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-68482"
},
{
"type": "WEB",
"url": "https://fortiguard.fortinet.com/psirt/FG-IR-26-078"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:L/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-PG6P-7JWX-86VP
Vulnerability from github – Published: 2022-05-24 17:00 – Updated: 2022-05-24 17:00Sensitive information disclosure vulnerability resulting from a lack of certificate validation during the File-Based Backup and Restore operations of VMware vCenter Server Appliance (6.7 before 6.7u3a and 6.5 before 6.5u3d) may allow a malicious actor to intercept sensitive data in transit over SCP. A malicious actor with man-in-the-middle positioning between vCenter Server Appliance and a backup target may be able to intercept sensitive data in transit during File-Based Backup and Restore operations.
{
"affected": [],
"aliases": [
"CVE-2019-5538"
],
"database_specific": {
"cwe_ids": [
"CWE-295"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2019-10-28T16:15:00Z",
"severity": "MODERATE"
},
"details": "Sensitive information disclosure vulnerability resulting from a lack of certificate validation during the File-Based Backup and Restore operations of VMware vCenter Server Appliance (6.7 before 6.7u3a and 6.5 before 6.5u3d) may allow a malicious actor to intercept sensitive data in transit over SCP. A malicious actor with man-in-the-middle positioning between vCenter Server Appliance and a backup target may be able to intercept sensitive data in transit during File-Based Backup and Restore operations.",
"id": "GHSA-pg6p-7jwx-86vp",
"modified": "2022-05-24T17:00:00Z",
"published": "2022-05-24T17:00:00Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2019-5538"
},
{
"type": "WEB",
"url": "https://www.vmware.com/security/advisories/VMSA-2019-0018.html"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-PG7H-V386-FW8H
Vulnerability from github – Published: 2022-05-24 17:22 – Updated: 2022-05-24 17:22libldap in certain third-party OpenLDAP packages has a certificate-validation flaw when the third-party package is asserting RFC6125 support. It considers CN even when there is a non-matching subjectAltName (SAN). This is fixed in, for example, openldap-2.4.46-10.el8 in Red Hat Enterprise Linux.
{
"affected": [],
"aliases": [
"CVE-2020-15719"
],
"database_specific": {
"cwe_ids": [
"CWE-295"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2020-07-14T14:15:00Z",
"severity": "HIGH"
},
"details": "libldap in certain third-party OpenLDAP packages has a certificate-validation flaw when the third-party package is asserting RFC6125 support. It considers CN even when there is a non-matching subjectAltName (SAN). This is fixed in, for example, openldap-2.4.46-10.el8 in Red Hat Enterprise Linux.",
"id": "GHSA-pg7h-v386-fw8h",
"modified": "2022-05-24T17:22:52Z",
"published": "2022-05-24T17:22:52Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-15719"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHBA-2019:3674"
},
{
"type": "WEB",
"url": "https://bugs.openldap.org/show_bug.cgi?id=9266"
},
{
"type": "WEB",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1740070"
},
{
"type": "WEB",
"url": "https://kc.mcafee.com/corporate/index?page=content\u0026id=SB10365"
},
{
"type": "WEB",
"url": "https://www.oracle.com/security-alerts/cpuapr2022.html"
},
{
"type": "WEB",
"url": "http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00033.html"
},
{
"type": "WEB",
"url": "http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00059.html"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-PGH9-MPWC-8JJF
Vulnerability from github – Published: 2026-05-06 20:16 – Updated: 2026-07-08 17:36Impact
A vulnerability has been identified in the SUSE Virtualization (Harvester) Rancher integration mechanism where by default the registration client uses an insecure TLS option that fails to verify the remote server’s certificate. This security gap could allow the execution of a man-in-the-middle (MitM) attack against SUSE Virtualization.
An attacker with network-level access between the SUSE Virtualization and Rancher Manager could interfere with the TLS handshake and abuse it to bypass TLS as a security control. The registration client could be misled to send cluster registration requests to an impersonated remote service. Additionally, because the system processes response payloads without performing size validation, an attacker could induce a memory buffer overflow, leading to a potential crash of the SUSE Virtualization registration controller.
Note that this vulnerability only affects the cluster registration configuration (the cluster-registration-url setting) which is distinct from the secured configuration used to maintain operational connectivity between SUSE Virtualization and Rancher Manager, as well as between the manager and hosted downstream clusters.
Please consult the associated MITRE ATT&CK - Technique - Adversary-in-the-Middle and MITRE ATT&CK - Technique - Endpoint Denial of Service: Application or System Exploitation for further information about this category of attack.
Patches
This vulnerability is addressed by updating the registration client’s default behaviour to validate the certificate presented by the remote server against the list of trusted system root certificate authority (CA) and those defined by the additional-ca setting.
Patched versions of SUSE Virtualization include releases v1.8.0 or newer.
Workarounds
If developers can't upgrade to a fixed version, ensure that only authorized cluster administrators can access and modify the cluster-registration-url setting.
Resources
If there are any questions or comments about this advisory: * Reach out to the SUSE Rancher Security team for security related inquiries. * Open an issue in the Rancher repository. * Verify with SUSE support matrix and product support lifecycle.
{
"affected": [
{
"package": {
"ecosystem": "Go",
"name": "github.com/harvester/harvester"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.8.0"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2025-71261"
],
"database_specific": {
"cwe_ids": [
"CWE-295"
],
"github_reviewed": true,
"github_reviewed_at": "2026-05-06T20:16:08Z",
"nvd_published_at": "2026-06-16T17:16:30Z",
"severity": "HIGH"
},
"details": "### Impact\n\nA vulnerability has been identified in the [SUSE Virtualization (Harvester) Rancher integration mechanism](https://docs.harvesterhci.io/v1.7/rancher/rancher-integration) where by default the registration client uses an insecure TLS option that fails to verify the remote server\u2019s certificate. This security gap could allow the execution of a man-in-the-middle (MitM) attack against SUSE Virtualization.\n\nAn attacker with network-level access between the SUSE Virtualization and Rancher Manager could interfere with the TLS handshake and abuse it to bypass TLS as a security control. The registration client could be misled to send cluster registration requests to an impersonated remote service. Additionally, because the system processes response payloads without performing size validation, an attacker could induce a memory buffer overflow, leading to a potential crash of the SUSE Virtualization registration controller.\n\nNote that this vulnerability only affects the cluster registration configuration (the `cluster-registration-url` setting) which is distinct from the secured configuration used to maintain operational connectivity between SUSE Virtualization and Rancher Manager, as well as between the manager and hosted downstream clusters.\n\nPlease consult the associated[ MITRE ATT\u0026CK - Technique - Adversary-in-the-Middle](https://attack.mitre.org/techniques/T1557/) and [MITRE ATT\u0026CK - Technique - Endpoint Denial of Service: Application or System Exploitation](https://attack.mitre.org/techniques/T1499/004/) for further information about this category of attack.\n\n### Patches\n\nThis vulnerability is addressed by updating the registration client\u2019s default behaviour to validate the certificate presented by the remote server against the list of trusted system root certificate authority (CA) and those defined by the `additional-ca` setting.\n\nPatched versions of SUSE Virtualization include releases v1.8.0 or newer.\n\n### Workarounds\n\nIf developers can\u0027t upgrade to a fixed version, ensure that only authorized cluster administrators can access and modify the `cluster-registration-url` setting.\n\n### Resources\n\nIf there are any questions or comments about this advisory:\n* Reach out to the [SUSE Rancher Security team](https://github.com/rancher/rancher/security/policy) for security related inquiries.\n* Open an issue in the [Rancher](https://github.com/rancher/rancher/issues/new/choose) repository.\n* Verify with SUSE [support matrix](https://www.suse.com/suse-rancher/support-matrix/all-supported-versions/) and [product support lifecycle](https://www.suse.com/lifecycle/).",
"id": "GHSA-pgh9-mpwc-8jjf",
"modified": "2026-07-08T17:36:53Z",
"published": "2026-05-06T20:16:08Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/harvester/harvester/security/advisories/GHSA-pgh9-mpwc-8jjf"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-71261"
},
{
"type": "PACKAGE",
"url": "https://github.com/harvester/harvester"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H",
"type": "CVSS_V3"
}
],
"summary": "Harvester\u0027s SUSE Virtualization Registration Client Vulnerable to MITM and DOS"
}
GHSA-PGQ4-VQ29-6V5R
Vulnerability from github – Published: 2023-05-26 21:30 – Updated: 2025-01-15 18:30An improper certificate validation vulnerability exists in curl <v8.1.0 in the way it supports matching of wildcard patterns when listed as "Subject Alternative Name" in TLS server certificates. curl can be built to use its own name matching function for TLS rather than one provided by a TLS library. This private wildcard matching function would match IDN (International Domain Name) hosts incorrectly and could as a result accept patterns that otherwise should mismatch. IDN hostnames are converted to puny code before used for certificate checks. Puny coded names always start with xn-- and should not be allowed to pattern match, but the wildcard check in curl could still check for x*, which would match even though the IDN name most likely contained nothing even resembling an x.
{
"affected": [],
"aliases": [
"CVE-2023-28321"
],
"database_specific": {
"cwe_ids": [
"CWE-295"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-05-26T21:15:16Z",
"severity": "MODERATE"
},
"details": "An improper certificate validation vulnerability exists in curl \u003cv8.1.0 in the way it supports matching of wildcard patterns when listed as \"Subject Alternative Name\" in TLS server certificates. curl can be built to use its own name matching function for TLS rather than one provided by a TLS library. This private wildcard matching function would match IDN (International Domain Name) hosts incorrectly and could as a result accept patterns that otherwise should mismatch. IDN hostnames are converted to puny code before used for certificate checks. Puny coded names always start with `xn--` and should not be allowed to pattern match, but the wildcard check in curl could still check for `x*`, which would match even though the IDN name most likely contained nothing even resembling an `x`.",
"id": "GHSA-pgq4-vq29-6v5r",
"modified": "2025-01-15T18:30:35Z",
"published": "2023-05-26T21:30:23Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-28321"
},
{
"type": "WEB",
"url": "https://hackerone.com/reports/1950627"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2023/10/msg00016.html"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/F4I75RDGX5ULSSCBE5BF3P5I5SFO7ULQ"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Z2LIWHWKOVH24COGGBCVOWDXXIUPKOMK"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/F4I75RDGX5ULSSCBE5BF3P5I5SFO7ULQ"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/Z2LIWHWKOVH24COGGBCVOWDXXIUPKOMK"
},
{
"type": "WEB",
"url": "https://security.gentoo.org/glsa/202310-12"
},
{
"type": "WEB",
"url": "https://security.netapp.com/advisory/ntap-20230609-0009"
},
{
"type": "WEB",
"url": "https://support.apple.com/kb/HT213843"
},
{
"type": "WEB",
"url": "https://support.apple.com/kb/HT213844"
},
{
"type": "WEB",
"url": "https://support.apple.com/kb/HT213845"
},
{
"type": "WEB",
"url": "http://seclists.org/fulldisclosure/2023/Jul/47"
},
{
"type": "WEB",
"url": "http://seclists.org/fulldisclosure/2023/Jul/48"
},
{
"type": "WEB",
"url": "http://seclists.org/fulldisclosure/2023/Jul/52"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N",
"type": "CVSS_V3"
}
]
}
Mitigation
Certificates should be carefully managed and checked to assure that data are encrypted with the intended owner's public key.
Mitigation
If certificate pinning is being used, ensure that all relevant properties of the certificate are fully validated before the certificate is pinned, including the hostname.
CAPEC-459: Creating a Rogue Certification Authority Certificate
An adversary exploits a weakness resulting from using a hashing algorithm with weak collision resistance to generate certificate signing requests (CSR) that contain collision blocks in their "to be signed" parts. The adversary submits one CSR to be signed by a trusted certificate authority then uses the signed blob to make a second certificate appear signed by said certificate authority. Due to the hash collision, both certificates, though different, hash to the same value and so the signed blob works just as well in the second certificate. The net effect is that the adversary's second X.509 certificate, which the Certification Authority has never seen, is now signed and validated by that Certification Authority.
CAPEC-475: Signature Spoofing by Improper Validation
An adversary exploits a cryptographic weakness in the signature verification algorithm implementation to generate a valid signature without knowing the key.