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AUSCERT External Security Bulletin Redistribution
ESB-2021.1942
MFSA 2021-26 Security Vulnerabilities fixed in Thunderbird 78.11
4 June 2021
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AusCERT Security Bulletin Summary
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Product: Thunderbird
Publisher: Mozilla
Operating System: Windows
UNIX variants (UNIX, Linux, OSX)
Impact/Access: Execute Arbitrary Code/Commands -- Remote with User Interaction
Denial of Service -- Remote with User Interaction
Access Confidential Data -- Remote with User Interaction
Resolution: Patch/Upgrade
CVE Names: CVE-2021-29967 CVE-2021-29964
Reference: ESB-2021.1897
Original Bulletin:
https://www.mozilla.org/en-US/security/advisories/mfsa2021-26/
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Mozilla Foundation Security Advisory 2021-26
Security Vulnerabilities fixed in Thunderbird 78.11
Announced: June 3, 2021
Impact: moderate
Products: Thunderbird
Fixed in: Thunderbird 78.11
# CVE-2021-29964: Out of bounds-read when parsing a `WM_COPYDATA` message
Reporter: Ronald Crane
Impact: moderate
Description
A locally-installed hostile program could send WM_COPYDATA messages that
Thunderbird would processing incorrectly, leading to an out-of-bounds read.
This bug only affects Thunderbird on Windows. Other operating systems are
unaffected.
References
o Bug 1706501
# CVE-2021-29967: Memory safety bugs fixed in Thunderbird 78.11
Reporter: Mozilla developers and community
Impact: high
Description
Mozilla developers Gabriele Svelto, Anny Gakhokidze, Alexandru Michis,
Christian Holler reported memory safety bugs present in Thunderbird 78.11. 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 78.11
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