Spoofing attack in Mozilla Thunderbird - CVE-2023-50762

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Main Vulnerability Database Vulnerabilities #VU84576

Spoofing attack in Mozilla Thunderbird - CVE-2023-50762

Published: December 19, 2023


Vulnerability identifier: #VU84576
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2023-50762
CWE-ID: CWE-451
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to spoof email content.

The vulnerability exists due to incorrect processing of user-supplied data. When processing a PGP/MIME payload that contains digitally signed text, the first paragraph of the text was never shown to the user. This is because the text was interpreted as a MIME message and the first paragraph was always treated as an email header section. A digitally signed text from a different context, such as a signed GIT commit, could be used to spoof an email message.


Affected software

Mozilla Thunderbird
Gentoo Linux
Debian Linux
SUSE Linux Enterprise Workstation Extension 15
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise Real Time 15
SUSE Linux Enterprise High Performance Computing 15
SUSE Linux Enterprise Desktop 15
SUSE Linux Enterprise Micro
Anolis OS
Red Hat Enterprise Linux for Power, little endian
Red Hat Enterprise Linux Desktop
Red Hat Enterprise Linux Workstation
CentOS
Red Hat Enterprise Linux Server
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux for ARM 64
Red Hat Enterprise Linux for x86_64
Red Hat Enterprise Linux Server - AUS
Red Hat Enterprise Linux Server - TUS
Red Hat Enterprise Linux for ARM 64 - Extended Update Support
Red Hat Enterprise Linux for Power, little endian - Extended Update Support
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support
Red Hat Enterprise Linux for x86_64 - Extended Update Support
Slackware Linux
SUSE Linux Enterprise Desktop 15 SP4 LTSS
SUSE Package Hub 15
openSUSE Leap
Ubuntu
Fedora
Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions
thunderbird (Ubuntu package)
mozilla-thunderbird
thunderbird (Red Hat package)
thunderbird
thunderbird (Debian package)
MozillaThunderbird-debuginfo
MozillaThunderbird-debugsource
MozillaThunderbird-translations-other
MozillaThunderbird
MozillaThunderbird-translations-common
mail-client/thunderbird
mail-client/thunderbird-bin

How to mitigate CVE-2023-50762

Install updates from vendor's website.

Mozilla Thunderbird - addressed in versions 115.6, 115.6.0
thunderbird (Ubuntu package) - addressed in versions 1:115.6.0+build2-0ubuntu0.20.04.1, 1:115.6.0+build2-0ubuntu0.22.04.1, 1:115.6.0+build2-0ubuntu0.23.04.1, 1:115.6.0+build2-0ubuntu0.23.10.1
mozilla-thunderbird - update to 115.6.0
thunderbird (Red Hat package) - addressed in versions 115.6.0-1.el7_9, 115.6.0-1.el8_2, 115.6.0-1.el8_4, 115.6.0-1.el8_6, 115.6.0-1.el8_8, 115.6.0-1.el8_9, 115.6.0-1.el9_0, 115.6.0-1.el9_2, 115.6.0-1.el9_3
thunderbird - addressed in versions 115.6.0-1.fc38, 115.6.0-1.fc39
thunderbird (Debian package) - addressed in versions 1:115.6.0-1~deb11u1, 1:115.6.0-1~deb12u1
thunderbird - update to 115.6.0-1.0.1
MozillaThunderbird-debuginfo - update to 115.6.0-150200.8.142.2
MozillaThunderbird-debugsource - update to 115.6.0-150200.8.142.2
MozillaThunderbird-translations-other - update to 115.6.0-150200.8.142.2
MozillaThunderbird - update to 115.6.0-150200.8.142.2
MozillaThunderbird-translations-common - update to 115.6.0-150200.8.142.2
mail-client/thunderbird - update to 115.7.0
mail-client/thunderbird-bin - update to 115.7.0

External References

Related Security Bulletins