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Red Hat: CVE-2020-28896: CVE-2020-28896 mutt: Incorrect handling of invalid initial IMAP responses could lead to an authentication attempt over unencrypted connection (Multiple Advisories)

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Red Hat: CVE-2020-28896: CVE-2020-28896 mutt: Incorrect handling of invalid initial IMAP responses could lead to an authentication attempt over unencrypted connection (Multiple Advisories)

Severity
3
CVSS
(AV:N/AC:H/Au:N/C:P/I:N/A:N)
Published
11/23/2020
Created
11/11/2021
Added
11/10/2021
Modified
12/15/2023

Description

Mutt before 2.0.2 and NeoMutt before 2020-11-20 did not ensure that $ssl_force_tls was processed if an IMAP server's initial server response was invalid. The connection was not properly closed, and the code could continue attempting to authenticate. This could result in authentication credentials being exposed on an unencrypted connection, or to a machine-in-the-middle.

Solution(s)

  • redhat-upgrade-mutt
  • redhat-upgrade-mutt-debuginfo
  • redhat-upgrade-mutt-debugsource

References

  • CVE-2020-28896
  • RHSA-2021:4181

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