A heap-buffer-overread vulnerability was found in GnuTLS in how it handles the Certificate Transparency (CT) Signed Certificate Timestamp (SCT) extension during X.509 certificate parsing. This flaw allows a malicious user to create a certificate containing a malformed SCT extension (OID 1.3.6.1.4.1.11129.2.4.2) that contains sensitive data. This issue leads to the exposure of confidential information when GnuTLS verifies certificates from certain websites when the certificate (SCT) is not checked correctly.
Se detectó una vulnerabilidad de sobrelectura del búfer de montón en GnuTLS en la gestión de la extensión de marca de tiempo del certificado firmado (SCT) de Transparencia de Certificado (CT) durante el análisis de certificados X.509. Esta falla permite a un usuario malintencionado crear un certificado con una extensión SCT mal formada (OID 1.3.6.1.4.1.11129.2.4.2) que contiene datos confidenciales. Este problema provoca la exposición de información confidencial cuando GnuTLS verifica certificados de ciertos sitios web cuando la SCT no se verifica correctamente.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
| Attack Vector | NETWORK |
|---|---|
| Attack Complexity | LOW |
| Privileges Required | NONE |
| User Interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality Impact | LOW |
| Integrity Impact | NONE |
| Availability Impact | NONE |
| Source | Type | Description |
|---|---|---|
| [email protected] | Secondary |
en
CWE-295
|
| Vendor | Product | Version | Update | Type |
|---|---|---|---|---|
| gnu | gnutls | - | <built-in method update of dict object at 0x7fd340b56fc0> | Application |
| redhat | openshift_container_platform | 4.0 | <built-in method update of dict object at 0x7fd36b3f21c0> | Application |
| redhat | enterprise_linux | 6.0 | <built-in method update of dict object at 0x7fd3694b7380> | Operating System |
| redhat | enterprise_linux | 7.0 | <built-in method update of dict object at 0x7fd384644f80> | Operating System |
| redhat | enterprise_linux | 8.0 | <built-in method update of dict object at 0x7fd36b1fa880> | Operating System |
| redhat | enterprise_linux | 9.0 | <built-in method update of dict object at 0x7fd36b3f1c40> | Operating System |
| redhat | enterprise_linux | 10.0 | <built-in method update of dict object at 0x7fd2d3f29f80> | Operating System |
| Vulnerable | CPE |
|---|---|
| Yes | cpe:2.3:a:gnu:gnutls:-:*:*:*:*:*:*:* |
| Vulnerable | CPE |
|---|---|
| Yes | cpe:2.3:a:redhat:openshift_container_platform:4.0:*:*:*:*:*:*:* |
| Yes | cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:* |
| Yes | cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* |
| Yes | cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:* |
| Yes | cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:* |
| Yes | cpe:2.3:o:redhat:enterprise_linux:10.0:*:*:*:*:*:*:* |