CVE-2021-3181
mutt - security update
6.5
MEDIUM
CVSS 3.1
EPSS 2.8%
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.
How to fix CVE-2021-3181
To remediate CVE-2021-3181, upgrade the affected package to a fixed version below.
- —upgrade to 2.0.5-1 or later
- —upgrade to 1.7.2-1+deb9u5 or later
- —upgrade to 1.10.1-2.1+deb10u5 or later
Is CVE-2021-3181 being exploited?
Low — EPSS is 2.8%, meaning exploitation activity has not been observed at scale.
Affected packages (3)
- from 0, < 2.0.5-1
- from 0, < 1.7.2-1+deb9u5
- from 0, < 1.10.1-2.1+deb10u5
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM6.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H |