CVE-2024-1551

Set-Cookie response headers were being incorrectly honored in multipart HTTP responses. If an attacker could control the Content-Type response header, as well as control part of the response body, they could inject Set-Cookie response headers that would have been honored by the browser. This vulnerability affects Firefox < 123, Firefox ESR < 115.8, and Thunderbird < 115.8.

Weakness

The product relies on the existence or values of cookies when performing security-critical operations, but it does not properly ensure that the setting is valid for the associated user.

Affected Software

Potential Mitigations

Related Attack Patterns

• https://cwe.mitre.org/data/definitions/226.html
• https://cwe.mitre.org/data/definitions/31.html
• https://cwe.mitre.org/data/definitions/39.html

References

• https://bugzilla.mozilla.org/show_bug.cgi?id=1864385
• https://lists.debian.org/debian-lts-announce/2024/03/msg00000.html
• https://lists.debian.org/debian-lts-announce/2024/03/msg00001.html
• https://www.mozilla.org/security/advisories/mfsa2024-05/
• https://www.mozilla.org/security/advisories/mfsa2024-06/
• https://www.mozilla.org/security/advisories/mfsa2024-07/