CVE-2024-7531 — Time-of-check Time-of-use (TOCTOU) Race Condition in Mozilla Firefox
Severity
6.5MEDIUMNVD
EPSS
0.1%
top 80.74%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedAug 6
Latest updateAug 21
Description
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…
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:NExploitability: 2.8 | Impact: 3.6
Affected Packages6 packages
🔴Vulnerability Details
5CVEList▶
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↗2024-08-06
OSV▶
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↗2024-08-06
GHSA▶
GHSA-3jj9-9269-99m2: 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↗2024-08-06