CVE-2021-32055: Critical severity Mutt Mutt vulnerability

Published May 5, 2021
·
Updated

Last updated 16 January 2025

Other sources

Mutt 1.11.0 through 2.0.x before 2.0.7 (and NeoMutt 2019-10-25 through 2021-05-04) has a $imapqresync issue in which imap/util.c has an out-of-bounds read in situations where an IMAP sequence set ends with a comma. NOTE: the $imapqresync setting for QRESYNC is not enabled by default.

Affected Software

12 affected componentsFixes available
Mutt Mutt>=1.11.0<2.0.7
neomutt neomutt>=20191025<=20210504
debian/mutt
2.0.5-4.1+deb11u32.2.12-0.1~deb12u12.2.9-1+deb12u12.2.13-1
debian/neomutt
20201127+dfsg.1-1.220220429+dfsg1-4.120250404+dfsg-2
alpine/neomutt>=20191025<20211015-r0
20211015-r0
alpine/neomutt>=20191025<20211015-r0
20211015-r0
alpine/neomutt>=20191025<20211015-r0
20211015-r0
alpine/neomutt>=20191025<20211015-r0
20211015-r0
alpine/neomutt>=20191025<20211015-r0
20211015-r0
alpine/neomutt>=20191025<20211015-r0
20211015-r0
alpine/neomutt>=20191025<20211015-r0
20211015-r0
alpine/neomutt>=20191025<20211015-r0
20211015-r0

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade debian/mutt to a version that resolves this vulnerability.

    Fixed in 2.0.5-4.1+deb11u3Fixed in 2.2.12-0.1~deb12u1Fixed in 2.2.9-1+deb12u1Fixed in 2.2.13-1
  2. Upgrade

    Upgrade debian/neomutt to a version that resolves this vulnerability.

    Fixed in 20201127+dfsg.1-1.2Fixed in 20220429+dfsg1-4.1Fixed in 20250404+dfsg-2
  3. Upgrade

    Upgrade alpine/neomutt to a version that resolves this vulnerability.

    Fixed in 20211015-r0
  4. Upgrade

    Upgrade Mutt to a version that resolves this vulnerability.

    Fixed in 2.0.7

Event History

May 5, 2021
CVE Published
via MITRE·03:06 PM
Data Sourced
via MITRE·03:06 PM
Description
Data Sourced
via NVD·04:15 PM
RemedyDescriptionSeverityWeaknessAffected Software
Data Sourced
via OSV·04:15 PM
DescriptionSeverityAffected Software

Frequently Asked Questions

1

What is CVE-2021-32055?

CVE-2021-32055 is a vulnerability in Mutt and NeoMutt which allows for an out-of-bounds read due to a $imap_qresync issue.

2

How severe is CVE-2021-32055?

CVE-2021-32055 has a severity value of 9.1, which is considered critical.

3

Which software versions are affected by CVE-2021-32055?

Mutt versions 1.11.0 through 2.0.x (before 2.0.7) and NeoMutt versions 2019-10-25 through 2021-05-04 are affected by CVE-2021-32055.

4

How can I fix CVE-2021-32055?

To fix CVE-2021-32055, upgrade to Mutt version 2.0.7 or later, or upgrade to a later version of NeoMutt after 2021-05-04.

5

Where can I find more information about CVE-2021-32055?

For more information about CVE-2021-32055, you can refer to the following references: [Link 1](http://lists.mutt.org/pipermail/mutt-announce/Week-of-Mon-20210503/000036.html), [Link 2](https://github.com/neomutt/neomutt/commit/fa1db5785e5cfd9d3cd27b7571b9fe268d2ec2dc), [Link 3](https://gitlab.com/muttmua/mutt/-/commit/7c4779ac24d2fb68a2a47b58c7904118f40965d5).

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