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.

CVSS v3 6.5 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

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

19 Mar 2025, 16:15

Type	Values Removed	Values Added
CWE		CWE-367

Information

Published : 2024-08-06 13:15

Updated : 2025-03-19 16:15

NVD link : CVE-2024-7531

Mitre link : CVE-2024-7531

CVE.ORG link : CVE-2024-7531

JSON object : View

Products Affected

mozilla

firefox_esr
firefox

CWE

NVD-CWE-noinfo CWE-367

Time-of-check Time-of-use (TOCTOU) Race Condition

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