CVE-2024-7531

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2024-7531
Calling `PK11_Encrypt()` in NSS using CKM_CHACHA20 and the same buffer for input and output can result in plaintext on an Intel Sandy Bridge processor. In Firefox this only affects the QUIC header protection feature when the connection is using the ChaCha20-Poly1305 cipher suite. The most likely outcome is connection failure, but if the connection persists despite the high packet loss it could be possible for a network observer to identify packets as coming from the same source despite a network path change. This vulnerability affects Firefox < 129, Firefox ESR < 115.14, and Firefox ESR < 128.1.

6.5 /10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 2.8 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References
Link Resource
https://bugzilla.mozilla.org/show_bug.cgi?id=1905691 Issue Tracking Permissions Required
https://www.mozilla.org/security/advisories/mfsa2024-33/ Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2024-34/ Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2024-35/ Vendor Advisory
Configurations

Configuration 1 (hide)

OR cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox_esr:128.0:*:*:*:*:*:*:*
History

12 Aug 2024, 16:10

Type Values Removed Values Added
References () https://bugzilla.mozilla.org/show_bug.cgi?id=1905691 - () https://bugzilla.mozilla.org/show_bug.cgi?id=1905691 - Issue Tracking, Permissions Required
References () https://www.mozilla.org/security/advisories/mfsa2024-33/ - () https://www.mozilla.org/security/advisories/mfsa2024-33/ - Vendor Advisory
References () https://www.mozilla.org/security/advisories/mfsa2024-34/ - () https://www.mozilla.org/security/advisories/mfsa2024-34/ - Vendor Advisory
References () https://www.mozilla.org/security/advisories/mfsa2024-35/ - () https://www.mozilla.org/security/advisories/mfsa2024-35/ - Vendor Advisory
CPE cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox_esr:128.0:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
First Time Mozilla
Mozilla firefox Esr
Mozilla firefox
Summary
  • (es) Llamar a `PK11_Encrypt()` en NSS usando CKM_CHACHA20 y el mismo búfer para entrada y salida puede generar texto plano en un procesador Intel Sandy Bridge. En Firefox, esto solo afecta la función de protección del encabezado QUIC cuando la conexión utiliza el conjunto de cifrado ChaCha20-Poly1305. El resultado más probable es una falla en la conexión, pero si la conexión persiste a pesar de la gran pérdida de paquetes, un observador de la red podría identificar que los paquetes provienen de la misma fuente a pesar de un cambio en la ruta de la red. Esta vulnerabilidad afecta a Firefox &lt; 129, Firefox ESR &lt; 115.14 y Firefox ESR &lt; 128.1.
CWE NVD-CWE-noinfo
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 6.5

06 Aug 2024, 13:15

Type Values Removed Values Added
New CVE
Information

Published : 2024-08-06 13:15

Updated : 2024-10-30 21:35

NVD link : CVE-2024-7531

Mitre link : CVE-2024-7531

CVE.ORG link : CVE-2024-7531

JSON object : View

Products Affected

mozilla

  • firefox
  • firefox_esr
CWE
NVD-CWE-noinfo