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Vulnerability · Published Nov 23, 2020 · Assigned by mitre

CVE-2020-28896

Medium 5.3

In plain English

A medium-severity security flaw in the mutt package (AlmaLinux). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 2.4% (higher than 84% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS NVD)5.3Medium
Exploit odds (30 days)2.4%top 16.2% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known

Official 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 packages & fixed versions

EcosystemPackageFixed inAdvisory
AlmaLinux:8mutt5:2.0.7-1.el8ALSA-2021:4181
Alpine:v3.20mutt2.0.2-r0ALPINE-CVE-2020-28896
Alpine:v3.21mutt2.0.2-r0ALPINE-CVE-2020-28896
Alpine:v3.22mutt2.0.2-r0ALPINE-CVE-2020-28896
Alpine:v3.23mutt2.0.2-r0ALPINE-CVE-2020-28896
Alpine:v3.24mutt2.0.2-r0ALPINE-CVE-2020-28896
Debian:12mutt2.0.2-1DEBIAN-CVE-2020-28896
Debian:13mutt2.0.2-1DEBIAN-CVE-2020-28896
Debian:14mutt2.0.2-1DEBIAN-CVE-2020-28896
Debian:12neomutt20201120+dfsg.1-1DEBIAN-CVE-2020-28896
Debian:13neomutt20201120+dfsg.1-1DEBIAN-CVE-2020-28896
Debian:14neomutt20201120+dfsg.1-1DEBIAN-CVE-2020-28896
Rocky Linux:8mutt5:2.0.7-1.el8RLSA-2021:4181

Affected products (as reported)

VendorProductVersions
n/a n/a n/a

References