CVE-2021-3181

NameCVE-2021-3181
Descriptionrfc822.c in Mutt through 2.0.4 allows remote attackers to cause a denial of service (mailbox unavailability) by sending email messages with sequences of semicolon characters in RFC822 address fields (aka terminators of empty groups). A small email message from the attacker can cause large memory consumption, and the victim may then be unable to see email messages from other persons.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
ReferencesDLA-2529-1, DSA-4838-1
NVD severitymedium
Debian Bugs980326

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
mutt (PTS)stretch1.7.2-1+deb9u3vulnerable
stretch (security)1.7.2-1+deb9u5fixed
buster, buster (security)1.10.1-2.1+deb10u5fixed
bullseye, sid2.0.5-4.1fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
muttsourcestretch1.7.2-1+deb9u5DLA-2529-1
muttsourcebuster1.10.1-2.1+deb10u5DSA-4838-1
muttsource(unstable)2.0.5-1980326

Notes

https://gitlab.com/muttmua/mutt/-/issues/323
https://gitlab.com/muttmua/mutt/-/commit/4a2becbdb4422aaffe3ce314991b9d670b7adf17

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