CVE-2024-11705

Severity: critical (CVSS 9.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.7% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-11-26 · updated 2026-06-17
Weakness: CWE-476

Description

`NSC_DeriveKey` inadvertently assumed that the `phKey` parameter is always non-NULL. When it was passed as NULL, a segmentation fault (SEGV) occurred, leading to crashes. This behavior conflicted with the PKCS#11 v3.0 specification, which allows `phKey` to be NULL for certain mechanisms. This vulnerability affects Firefox < 133 and Thunderbird < 133.

Affected products

Mozilla Firefox: before 133.0 — fixed in 133.0
Mozilla Thunderbird: before 133.0 — fixed in 133.0

How to fix

Upgrade to a fixed version: Mozilla Firefox 133.0; Mozilla Thunderbird 133.0. Check the vendor advisory for mitigations.

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1921768
https://www.mozilla.org/security/advisories/mfsa2024-63/
https://www.mozilla.org/security/advisories/mfsa2024-67/

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