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AUSCERT External Security Bulletin Redistribution
ESB-2022.6478
MFSA 2022-53 Security Vulnerabilities fixed in Thunderbird 102.6
14 December 2022
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AusCERT Security Bulletin Summary
---------------------------------
Product: Thunderbird
Publisher: Mozilla
Operating System: Windows
UNIX variants (UNIX, Linux, OSX)
Resolution: Patch/Upgrade
CVE Names: CVE-2022-46882 CVE-2022-46881 CVE-2022-46880
CVE-2022-46878 CVE-2022-46875 CVE-2022-46874
CVE-2022-46872
Original Bulletin:
https://www.mozilla.org/en-US/security/advisories/mfsa2022-53/
Comment: CVSS (Max): None available when published
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Mozilla Foundation Security Advisory 2022-53
Security Vulnerabilities fixed in Thunderbird 102.6
Announced: December 13, 2022
Impact: high
Products: Thunderbird
Fixed in: Thunderbird 102.6
In general, these flaws cannot be exploited through email in the Thunderbird
product because scripting is disabled when reading mail, but are potentially
risks in browser or browser-like contexts.
# CVE-2022-46880: Use-after-free in WebGL
Reporter: Atte Kettunen
Impact: high
Description
A missing check related to tex units could have led to a use-after-free and
potentially exploitable crash.
References
o Bug 1749292
# CVE-2022-46872: Arbitrary file read from a compromised content process
Reporter: Nika Layzell
Impact: high
Description
An attacker who compromised a content process could have partially escaped the
sandbox to read arbitrary files via clipboard-related IPC messages.
This bug only affects Thunderbird for Linux. Other operating systems are
unaffected.
References
o Bug 1799156
# CVE-2022-46881: Memory corruption in WebGL
Reporter: Karl and an Anonymous ASAN Nightly User
Impact: high
Description
An optimization in WebGL was incorrect in some cases, and could have led to
memory corruption and a potentially exploitable crash.
References
o Bug 1770930
# CVE-2022-46874: Drag and Dropped Filenames could have been truncated to
malicious extensions
Reporter: Matthias Zoellner
Impact: moderate
Description
A file with a long filename could have had its filename truncated to remove the
valid extension, leaving a malicious extension in its place. This could
potentially led to user confusion and the execution of malicious code.
References
o Bug 1746139
# CVE-2022-46875: Download Protections were bypassed by .atloc and .ftploc files
on Mac OS
Reporter: Dohyun Lee
Impact: moderate
Description
The executable file warning was not presented when downloading .atloc and
.ftploc files, which can run commands on a user's computer.
Note: This issue only affected Mac OS operating systems. Other operating
systems are unaffected.
References
o Bug 1786188
# CVE-2022-46882: Use-after-free in WebGL
Reporter: Irvan Kurniawan
Impact: moderate
Description
A use-after-free in WebGL extensions could have led to a potentially
exploitable crash.
References
o Bug 1789371
# CVE-2022-46878: Memory safety bugs fixed in Thunderbird 102.6
Reporter: Mozilla developers
Impact: high
Description
Mozilla developers Randell Jesup, Valentin Gosu, Olli Pettay, and the Mozilla
Fuzzing Team reported memory safety bugs present in Thunderbird 102.5. Some of
these bugs showed evidence of memory corruption and we presume that with enough
effort some of these could have been exploited to run arbitrary code.
References
o Memory safety bugs fixed in Thunderbird 102.6
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