CVE-2020-14954

mutt: response Injection via STARTTLS in SMTP, POP3 and IMAP

Published Jun 21, 2020 CVSS 3.1 · 5.9 Medium EPSS 2.3% KEV · Not listed
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."

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Debian DLA Debian DLA DLA-2268-1 mutt security update
Debian DLA Debian DLA DLA-2268-2 mutt regression update
Debian DSA Debian DSA DSA-4708-1 neomutt security update
EUVD EUVD EUVD-2020-7089 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."
Ubuntu USN Ubuntu USN USN-4403-1 Mutt vulnerability and regression
Ubuntu USN Ubuntu USN USN-7204-1 NeoMutt vulnerabilities
History
Type Values Removed Values Added
Metrics epss

{'score': 0.11936}

epss

{'score': 0.05464}

Type Values Removed Values Added
Metrics epss

{'score': 0.066}

epss

{'score': 0.11936}

Weaknesses

Sources

Status
PUBLISHED
Assigner
mitre
Published
Updated
Aug 4, 2024, 1:00 PM
Reserved
Jun 21, 2020, 12:00 AM
Status
Modified
Published
Jun 21, 2020, 5:15 PM
Modified
Jun 17, 2026, 2:55 AM
Severity
Moderate
Public date
Jun 16, 2020, 12:00 AM