CVE-2024-7531

6.5 · MEDIUM

Published Aug 6, 2024 mozilla CWE-367 EPSS 0.44% (37th pctl) CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

Overview

CVE-2024-7531 is a medium-severity vulnerability affecting mozilla firefox. It was published on August 6, 2024 and has a CVSS 3.1 base score of 6.5 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 6.5, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical 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 path change. This vulnerability affects Firefox < 129, Firefox ESR < 115.14, and Firefox ESR < 128.1.

Remediation

Check the references section for vendor advisories and patches from mozilla. Update firefox to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected Products

Vendor	Product	Versions	Status
mozilla	firefox	>= 0, < 129.0	Affected
mozilla	firefox_esr	>= 0, < 115.14.0	Affected

References

Ref bugzilla.mozilla.org/show_bug.cgi?id=1905691 Ref www.mozilla.org/security/advisories/mfsa2024-33/ Ref www.mozilla.org/security/advisories/mfsa2024-34/ Ref www.mozilla.org/security/advisories/mfsa2024-35/

Frequently Asked Questions

What is CVE-2024-7531?

CVE-2024-7531 is a medium-severity vulnerability affecting mozilla firefox. It was published on August 6, 2024 and has a CVSS 3.1 base score of 6.5 (MEDIUM).

How severe is CVE-2024-7531?

This vulnerability has a CVSS 3.1 base score of 6.5, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2024-7531?

How can CyberStrike help with CVE-2024-7531?

CyberStrike's AI-powered security agents can automatically detect CVE-2024-7531 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.

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