<p>Upgrade <code>RHEL:8</code> <code>mutt</code> to version 5:2.0.7-1.el8 or higher.<br>This issue was patched in <code>RHSA-2021:4181</code>.</p>

Memory Leak Affecting mutt package, versions <5:2.0.7-1.el8

Threat Intelligence

1.23% (86^th percentile)

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Snyk ID SNYK-RHEL8-MUTT-4134401
published 26 Jul 2021
disclosed 19 Jan 2021

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Introduced: 19 Jan 2021

CVE-2021-3181 Open this link in a new tab CWE-401 Open this link in a new tab

How to fix?

Upgrade RHEL:8 mutt to version 5:2.0.7-1.el8 or higher.
This issue was patched in RHSA-2021:4181.

NVD Description

Note: Versions mentioned in the description apply only to the upstream mutt package and not the mutt package as distributed by RHEL. See How to fix? for RHEL:8 relevant fixed versions and status.

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.

References

CVSS Scores

version 3.1

Attack Vector (AV)

Network
Attack Complexity (AC)

Low
Privileges Required (PR)

None
User Interaction (UI)

Required

Scope (S)

Unchanged

Confidentiality (C)

None
Integrity (I)

None
Availability (A)

High

Memory Leak Affecting mutt package, versions <5:2.0.7-1.el8

Severity

Based on Red Hat Enterprise Linux security rating