CVEvulnerability

CVE-2020-14954

5.9 MEDIUM Published 2020-06-21 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2020-06-21
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
5.9 MEDIUM — CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
CVSS 2.0 ([email protected])
4.3 MEDIUM — AV:N/AC:M/Au:N/C:N/I:P/A:N
Weaknesses
CWE-74

Description

Mutt before 1.14.4 and NeoMutt before 2020-06-19 have a STARTTLS buffering issue that affects IMAP, SMTP, and POP3. When a server sends a "begin TLS" response, the client reads additional data (e.g., from a man-in-the-middle attacker) and evaluates it in a TLS context, aka "response injection."

Affected configurations

• mutt mutt (< 1.14.4) • debian debian linux 9.0 • debian debian linux 10.0 • neomutt neomutt (< 20200619) • fedoraproject fedora 31 • fedoraproject fedora 32 • debian debian linux 8.0 • canonical ubuntu linux 12.04 • canonical ubuntu linux 16.04 • canonical ubuntu linux 18.04 • canonical ubuntu linux 19.10 • canonical ubuntu linux 20.04 • opensuse leap 15.1 • opensuse leap 15.2

Related

Weakness · CWE (1)

  • CWE-74 Improper Neutralization of Special Elements in Output Used by a Downstream Component weakness

References