CVEvulnerability

CVE-2020-28896

5.3 MEDIUM Published 2020-11-23 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2020-11-23
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
5.3 MEDIUM — CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N
CVSS 2.0 ([email protected])
2.6 LOW — AV:N/AC:H/Au:N/C:P/I:N/A:N
Weaknesses
CWE-287, CWE-755

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.

Affected configurations

• mutt mutt (< 2.0.2) • neomutt neomutt (< 2020-11-20) • debian debian linux 9.0

Related

Weakness · CWE (2)

  • CWE-287 Improper Authentication weakness
  • CWE-755 Improper Handling of Exceptional Conditions weakness

References