#VU50017 Resource exhaustion in Mutt - CVE-2021-3181
Published: January 19, 2021 / Updated: January 26, 2021
Vulnerability identifier: #VU50017
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2021-3181
CWE-ID: CWE-400
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
Mutt
Mutt
Software vendor:
Mutt.org
Mutt.org
Description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to improper input validation when handling email messages with sequences of semicolon characters in RFC822 address fields. A remote attacker can send a specially crafted email message, force the application to consume a huge amount of memory and perform a denial of service (DoS) attack.
Remediation
Install updates from vendor's website.
External links
- http://www.openwall.com/lists/oss-security/2021/01/19/10
- https://gitlab.com/muttmua/mutt/-/commit/4a2becbdb4422aaffe3ce314991b9d670b7adf17
- https://gitlab.com/muttmua/mutt/-/commit/939b02b33ae29bc0d642570c1dcfd4b339037d19
- https://gitlab.com/muttmua/mutt/-/commit/d4305208955c5cdd9fe96dfa61e7c1e14e176a14
- https://gitlab.com/muttmua/mutt/-/issues/323