CVE-2024-11704

CRITICAL

Firefox < 133 and ESR < 128.7 - Use-After-Free in sec_pkcs7_decoder_start_decrypt

Title source: llm

Description

A double-free issue could have occurred in `sec_pkcs7_decoder_start_decrypt()` when handling an error path. Under specific conditions, the same symmetric key could have been freed twice, potentially leading to memory corruption. This vulnerability affects Firefox < 133, Thunderbird < 133, Firefox ESR < 128.7, and Thunderbird < 128.7.

References (7)

Core 7

Core References

Mailing List

https://lists.debian.org/debian-lts-announce/2025/02/msg00005.html

Mailing List

https://lists.debian.org/debian-lts-announce/2025/02/msg00006.html

Issue Tracking, Permissions Required

https://bugzilla.mozilla.org/show_bug.cgi?id=1899402

Vendor Advisory

https://www.mozilla.org/security/advisories/mfsa2024-63/

Vendor Advisory

https://www.mozilla.org/security/advisories/mfsa2024-67/

Vendor Advisory

https://www.mozilla.org/security/advisories/mfsa2025-09/

Vendor Advisory

https://www.mozilla.org/security/advisories/mfsa2025-10/

Scores

CVSS v3 9.8

EPSS 0.0092

EPSS Percentile 55.4%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment

Exploitation none

Automatable yes

Technical Impact total

Details

CWE

CWE-415

Status published

Products (3)

mozilla/firefox < 128.7.0

mozilla/firefox < 133.0

mozilla/thunderbird < 128.7.0

Published Nov 26, 2024

Tracked Since Feb 18, 2026