Rapid7 Vulnerability & Exploit Database

Ubuntu: USN-4703-1 (CVE-2021-3181): Mutt vulnerability

Back to Search

Ubuntu: USN-4703-1 (CVE-2021-3181): Mutt vulnerability

Severity
4
CVSS
(AV:N/AC:M/Au:N/C:N/I:N/A:P)
Published
01/19/2021
Created
01/28/2021
Added
01/26/2021
Modified
03/08/2021

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.

Solution(s)

  • ubuntu-upgrade-mutt

With Rapid7 live dashboards, I have a clear view of all the assets on my network, which ones can be exploited, and what I need to do in order to reduce the risk in my environment in real-time. No other tool gives us that kind of value and insight.

– Scott Cheney, Manager of Information Security, Sierra View Medical Center

;