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Fencer Vulns
critical 9.8

CVE-2024-11704 json

A double-free issue could have occurred in `sec_pkcs7_decoder_start_decrypt()` when handling an error path.

published 2024-11-26 23 mo ago modified 2026-06-17 4 mo ago also EUVD-2024-34419

cvss
9.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.9%
EPSS 0.9% chance of exploitation in 30 days, percentile 60%
public exploits
0
none known

Summary

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.

Patch / fix

  • Mozilla Firefox 133
  • Mozilla Thunderbird 128.7, 133
  • Mozilla Firefox ESR 128.7
  • firefox-esr Debian 12 128.7.0esr-1~deb12u1
  • firefox-esr Debian 14, Debian 13 128.7.0esr-1
  • thunderbird Debian 12 1:128.7.0esr-1~deb12u1
  • thunderbird Debian 14, Debian 13 1:128.7.0esr-1

debian advisories DEBIAN-CVE-2024-11704

  • firefox Ubuntu 20.04 LTS 133.0+build2-0ubuntu0.20.04.1

ubuntu advisories UBUNTU-CVE-2024-11704

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • MozillaThunderbird SLE Workstation Extension 15 SP6, SLE Module for Package Hub 15 SP6, openSUSE Leap 15.6 128.7.0-150200.8.200.1
  • MozillaFirefox SLES for SAP 15 SP5, SLES for SAP 15 SP4, SLES for SAP 15 SP3 +11 more 128.7.0-150200.152.170.1
  • MozillaFirefox SLES LTSS Extended Security 12 SP5, SLES 12 SP5-LTSS 128.7.0-112.246.1

suse advisories SUSE-SU-2025:0405-1SUSE-SU-2025:0391-1SUSE-SU-2025:0374-1

  • MozillaThunderbird openSUSE Tumbleweed 128.7.0-1.1
  • firefox-esr openSUSE Tumbleweed 128.7.0-1.1
  • MozillaFirefox openSUSE Tumbleweed 133.0.3-1.1

opensuse advisories openSUSE-SU-2025:14731-1openSUSE-SU-2025:14727-1openSUSE-SU-2024:14583-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2024-11704 updated cvss 4.3

firefox: thunderbird: Potential Double-Free Vulnerability in PKCS#7 Decryption Handling

  • Red Hat Enterprise Linux 6 firefox, thunderbird Red Hat Enterprise Linux 7 firefox, thunderbird
    affected: no fix planned “Out of support scope”
  • Red Hat Enterprise Linux 8 firefox, thunderbird
    affected: no fix available “Fix deferred”
  • Red Hat Enterprise Linux 9 firefox, firefox-x11, thunderbird Red Hat Enterprise Linux 10 firefox, thunderbird
    under investigation

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
total
Assessed
23 mo ago

Exploit prediction

0.91% chance of exploitation in the next 30 days, higher than 60% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CISA ADP 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CNA 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

  • Mozilla Firefox
  • Mozilla Thunderbird
  • Mozilla Firefox ESR

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.