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Fencer Vulns
medium 6.5

CVE-2024-8394 json

When aborting the verification of an OTR chat session, an attacker could have caused a use-after-free bug leading to a potentially exploita…

published 2024-09-06 2 y ago modified 2026-06-17 4 mo ago also EUVD-2024-49147

cvss
6.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 26%
public exploits
0
none known

Summary

When aborting the verification of an OTR chat session, an attacker could have caused a use-after-free bug leading to a potentially exploitable crash. This vulnerability affects Thunderbird < 128.2.

Patch / fix

  • Mozilla Thunderbird 128.2
  • thunderbird Debian 14, Debian 13 1:128.2.0esr-1

debian advisories DEBIAN-CVE-2024-8394

  • thunderbird RHEL 8 128.2.0-1.el8_10
  • thunderbird RHEL 9 128.2.0-1.el9_4
  • thunderbird RHEL 8.2 AUS 128.2.0-1.el8_2
  • thunderbird RHEL 8.4 TUS, RHEL 8.4 E4S, RHEL 8.4 AUS 128.2.0-1.el8_4
  • thunderbird RHEL 9.0 E4S 128.2.0-1.el9_0
  • thunderbird RHEL 8.8 EUS 128.2.0-1.el8_8
  • thunderbird RHEL 9.2 EUS 128.2.0-1.el9_2
  • thunderbird RHEL 8.6 TUS 128.2.0-1.el8_6

red hat advisories RHSA-2024:6723RHSA-2024:6721RHSA-2024:6722RHSA-2024:6719RHSA-2024:6720RHSA-2024:6684

  • MozillaThunderbird SLE Workstation Extension 15 SP6, SLE Workstation Extension 15 SP5, SLE Module for Package Hub 15 SP6 +3 more 128.2.3-150200.8.177.1

suse advisories SUSE-SU-2024:3507-1

  • thunderbird AlmaLinux 9 128.2.0-1.el9_4.alma.1
  • thunderbird AlmaLinux 8 128.2.0-1.el8_10.alma.1

almalinux advisories ALSA-2024:6683ALSA-2024:6684

  • thunderbird Rocky Linux 9 128.2.0-1.el9_4.0.1
  • thunderbird Rocky Linux 8 128.2.0-1.el8_10

rocky linux advisories RLSA-2024:6683RLSA-2024:6684

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-2024-8394 updated cvss 6.5

thunderbird: Crash when aborting verification of OTR chat

  • Red Hat Enterprise Linux 6 thunderbird Red Hat Enterprise Linux 7 thunderbird
    affected: workaround, no fix planned “Out of support scope”
  • Red Hat Enterprise Linux AppStream (v. 8) thunderbird 128.2.0-1.el8_10
    fixed: vendor fix RHSA-2024:6684
  • Red Hat Enterprise Linux AppStream (v. 9) thunderbird 128.2.0-1.el9_4
    fixed: vendor fix RHSA-2024:6683
  • Red Hat Enterprise Linux AppStream AUS (v. 8.2) thunderbird 128.2.0-1.el8_2
    fixed: vendor fix RHSA-2024:6723
  • Red Hat Enterprise Linux AppStream AUS (v.8.4) thunderbird 128.2.0-1.el8_4 Red Hat Enterprise Linux AppStream E4S (v.8.4) thunderbird 128.2.0-1.el8_4
    fixed: vendor fix RHSA-2024:6721
  • Red Hat Enterprise Linux AppStream E4S (v.9.0) thunderbird 128.2.0-1.el9_0
    fixed: vendor fix RHSA-2024:6722
  • Red Hat Enterprise Linux AppStream EUS (v.8.8) thunderbird 128.2.0-1.el8_8
    fixed: vendor fix RHSA-2024:6719
  • Red Hat Enterprise Linux AppStream EUS (v.9.2) thunderbird 128.2.0-1.el9_2
    fixed: vendor fix RHSA-2024:6720
show 2 more
  • Red Hat Enterprise Linux AppStream TUS (v.8.4) thunderbird 128.2.0-1.el8_4
    fixed: vendor fix RHSA-2024:6721
  • Red Hat Enterprise Linux AppStream TUS (v.8.6) thunderbird 128.2.0-1.el8_6
    fixed: vendor fix RHSA-2024:6816

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
no
Technical impact
partial
Assessed
2 y ago

Exploit prediction

0.33% chance of exploitation in the next 30 days, higher than 26% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CISA ADP 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
NVD 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CNA 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Affected products

  • Mozilla Thunderbird

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.