CVE-2024-7531 Affecting firefox-esr package, versions <115.14.0esr-1


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.06% (28th percentile)

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  • Snyk IDSNYK-DEBIANUNSTABLE-FIREFOXESR-7642555
  • published7 Aug 2024
  • disclosed6 Aug 2024

Introduced: 6 Aug 2024

CVE-2024-7531  (opens in a new tab)

How to fix?

Upgrade Debian:unstable firefox-esr to version 115.14.0esr-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream firefox-esr package and not the firefox-esr package as distributed by Debian. See How to fix? for Debian:unstable relevant fixed versions and status.

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 Scores

version 3.1