Vulnerability Description
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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Mutt | Mutt | <= 2.0.4 |
| Debian | Debian Linux | 9.0 |
| Fedoraproject | Fedora | 32 |
Related Weaknesses (CWE)
References
- http://www.openwall.com/lists/oss-security/2021/01/19/10Mailing ListThird Party Advisory
- http://www.openwall.com/lists/oss-security/2021/01/27/3Mailing ListThird Party Advisory
- https://gitlab.com/muttmua/mutt/-/commit/4a2becbdb4422aaffe3ce314991b9d670b7adf1PatchThird Party Advisory
- https://gitlab.com/muttmua/mutt/-/commit/939b02b33ae29bc0d642570c1dcfd4b339037d1PatchThird Party Advisory
- https://gitlab.com/muttmua/mutt/-/commit/d4305208955c5cdd9fe96dfa61e7c1e14e176a1PatchThird Party Advisory
- https://gitlab.com/muttmua/mutt/-/issues/323Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2021/01/msg00017.htmlMailing ListThird Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://security.gentoo.org/glsa/202101-25Third Party Advisory
- https://www.debian.org/security/2021/dsa-4838Third Party Advisory
- http://www.openwall.com/lists/oss-security/2021/01/19/10Mailing ListThird Party Advisory
- http://www.openwall.com/lists/oss-security/2021/01/27/3Mailing ListThird Party Advisory
- https://gitlab.com/muttmua/mutt/-/commit/4a2becbdb4422aaffe3ce314991b9d670b7adf1PatchThird Party Advisory
- https://gitlab.com/muttmua/mutt/-/commit/939b02b33ae29bc0d642570c1dcfd4b339037d1PatchThird Party Advisory
FAQ
What is CVE-2021-3181?
CVE-2021-3181 is a vulnerability with a CVSS score of 6.5 (MEDIUM). 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 (...
How severe is CVE-2021-3181?
CVE-2021-3181 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-3181?
Check the references section above for vendor advisories and patch information. Affected products include: Mutt Mutt, Debian Debian Linux, Fedoraproject Fedora.