Vulnerability Monitor

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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.

Published

2024-08-06T13:15:57.787

Last Modified

2025-03-19T16:15:29.570

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 6.5 (MEDIUM)

Weaknesses

Type: Primary
NVD-CWE-noinfo
Type: Secondary
CWE-367

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	mozilla	firefox	< 129.0	Yes
Application	mozilla	firefox_esr	< 115.14.0	Yes
Application	mozilla	firefox_esr	128.0	Yes

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1905691 Issue Tracking, Permissions Required ([email protected])
https://www.mozilla.org/security/advisories/mfsa2024-33/ Vendor Advisory ([email protected])
https://www.mozilla.org/security/advisories/mfsa2024-34/ Vendor Advisory ([email protected])
https://www.mozilla.org/security/advisories/mfsa2024-35/ Vendor Advisory ([email protected])