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AUSCERT External Security Bulletin Redistribution
MFSA 2021-02 Security Vulnerabilities fixed in Thunderbird 78.6.1
12 January 2021
AusCERT Security Bulletin Summary
Operating System: Windows
Impact/Access: Execute Arbitrary Code/Commands -- Remote with User Interaction
Denial of Service -- Remote with User Interaction
CVE Names: CVE-2020-16044
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Mozilla Foundation Security Advisory 2021-02
Security Vulnerabilities fixed in Thunderbird 78.6.1
Announced: January 11, 2021
Fixed in: Thunderbird 78.6.1
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-2020-16044: Use-after-free write when handling a malicious COOKIE-ECHO
Reporter: Ned Williamson
A malicious peer could have modified a COOKIE-ECHO chunk in a SCTP packet in a
way that potentially resulted in a use-after-free. We presume that with enough
effort it could have been exploited to run arbitrary code.
o Bug 1683964
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