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Red Hat: CVE-2021-29969: CVE-2021-29969 Mozilla: IMAP server responses sent by a MITM prior to STARTTLS could be processed (Multiple Advisories)

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Red Hat: CVE-2021-29969: CVE-2021-29969 Mozilla: IMAP server responses sent by a MITM prior to STARTTLS could be processed (Multiple Advisories)

Severity
4
CVSS
(AV:N/AC:M/Au:N/C:P/I:N/A:N)
Published
07/26/2021
Created
07/27/2021
Added
07/27/2021
Modified
12/15/2023

Description

If Thunderbird was configured to use STARTTLS for an IMAP connection, and an attacker injected IMAP server responses prior to the completion of the STARTTLS handshake, then Thunderbird didn't ignore the injected data. This could have resulted in Thunderbird showing incorrect information, for example the attacker could have tricked Thunderbird to show folders that didn't exist on the IMAP server. This vulnerability affects Thunderbird < 78.12.

Solution(s)

  • redhat-upgrade-thunderbird
  • redhat-upgrade-thunderbird-debuginfo
  • redhat-upgrade-thunderbird-debugsource

References

  • CVE-2021-29969
  • RHSA-2021:2881
  • RHSA-2021:2882
  • RHSA-2021:2883
  • RHSA-2021:2914

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