Cleartext Transmission of Sensitive Information Affecting firefox package, versions <0:128.2.0-1.el8_2


Severity

Recommended
high

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.06% (29th percentile)

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  • Snyk IDSNYK-RHEL8-FIREFOX-9480033
  • published18 Mar 2025
  • disclosed6 Aug 2024

Introduced: 6 Aug 2024

CVE-2024-7531  (opens in a new tab)
CWE-319  (opens in a new tab)

How to fix?

Upgrade RHEL:8 firefox to version 0:128.2.0-1.el8_2 or higher.
This issue was patched in RHSA-2024:6839.

NVD Description

Note: Versions mentioned in the description apply only to the upstream firefox package and not the firefox package as distributed by RHEL. See How to fix? for RHEL:8 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 Base Scores

version 3.1