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AUSCERT External Security Bulletin Redistribution
ESB-2021.1674
Security Vulnerabilities fixed in Thunderbird 78.10.2
18 May 2021
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AusCERT Security Bulletin Summary
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Product: Thunderbird
Publisher: Mozilla
Operating System: UNIX variants (UNIX, Linux, OSX)
Windows
Impact/Access: Provide Misleading Information -- Remote with User Interaction
Reduced Security -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2021-29957 CVE-2021-29956
Original Bulletin:
https://www.mozilla.org/en-US/security/advisories/mfsa2021-22/
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Mozilla Foundation Security Advisory 2021-22
Security Vulnerabilities fixed in Thunderbird 78.10.2
Announced: May 17, 2021
Impact: low
Products: Thunderbird
Fixed in: Thunderbird 78.10.2
# CVE-2021-29957: Partial protection of inline OpenPGP message not indicated
Reporter: Cure53
Impact: low
Description
If a MIME encoded email contains an OpenPGP inline signed or encrypted message
part, but also contains an additional unprotected part, Thunderbird did not
indicate that only parts of the message are protected.
References
o Bug 1673241
# CVE-2021-29956: Thunderbird stored OpenPGP secret keys without master password
protection
Reporter: Participants on the Thunderbird E2EE Mailing List
Impact: low
Description
OpenPGP secret keys that were imported using Thunderbird version 78.8.1 up to
version 78.10.1 were stored unencrypted on the user's local disk. The master
password protection was inactive for those keys. Version 78.10.2 will restore
the protection mechanism for newly imported keys, and will automatically
protect keys that had been imported using affected Thunderbird versions.
References
o Bug 1710290
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