Debian Security Advisory
DLA-2529-1 mutt -- LTS security update
- Date Reported:
- 21 Jan 2021
- Affected Packages:
- Security database references:
- In the Debian bugtracking system: Bug 980326.
In Mitre's CVE dictionary: CVE-2021-3181.
- More information:
rfc822.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.
For Debian 9 stretch, this problem has been fixed in version 1.7.2-1+deb9u5.
We recommend that you upgrade your mutt packages.
For the detailed security status of mutt please refer to its security tracker page at: https://security-tracker.debian.org/tracker/mutt
Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: https://wiki.debian.org/LTS