This update for mutt fixes the following issue :

CVE-2021-3181: Fixed a memory leak in recipient parsing (bsc#1181221).

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The remote Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS host has packages installed that are affected by a vulnerability as referenced in the USN-4703-1 advisory.

    It was discovered that Mutt incorrectly handled certain email messages. An attacker could possibly use     this issue to cause a denial of service.

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote CentOS Linux 8 host has a package installed that is affected by multiple vulnerabilities as referenced in the CESA-2021:4181 advisory.

  - mutt: Incorrect handling of invalid initial IMAP responses could lead to an authentication attempt over     unencrypted connection (CVE-2020-28896)

  - mutt: Memory leak when parsing rfc822 group addresses (CVE-2021-3181)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

According to the version of the mutt package installed, the EulerOS installation on the remote host is affected by the following vulnerability :

  - 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.(CVE-2021-3181)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Tavis Ormandy discovered a memory leak flaw in the rfc822 group recipient parsing in Mutt, a text-based mailreader supporting MIME, GPG, PGP and threading, which could result in denial of service.

The remote Fedora 33 host has a package installed that is affected by a vulnerability as referenced in the FEDORA-2021-a4f016c6c8 advisory.

  - 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. (CVE-2021-3181)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 8 host has a package installed that is affected by multiple vulnerabilities as referenced in the ELSA-2021-4181 advisory.

    [5:2.0.7-1]
    - Upgrade to v2.0.7
    - New bug fix release
    - Resolves: #1912614

    [5:2.0.6-1]
    - Upgrade to v2.0.6
    - Resolves: #1912614

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-017499 advisory.

    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.

Tenable has extracted the preceding description block directly from the Unity Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Rocky Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2021:4181 advisory.

  - Mutt before 2.0.2 and NeoMutt before 2020-11-20 did not ensure that $ssl_force_tls was processed if an     IMAP server's initial server response was invalid. The connection was not properly closed, and the code     could continue attempting to authenticate. This could result in authentication credentials being exposed     on an unencrypted connection, or to a machine-in-the-middle. (CVE-2020-28896)

  - 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. (CVE-2021-3181)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

This update for mutt fixes the following issue :

  - CVE-2021-3181: Fixed a memory leak in recipient parsing     (bsc#1181221).

This update was imported from the SUSE:SLE-15:Update update project.

The remote Fedora 32 host has a package installed that is affected by a vulnerability as referenced in the FEDORA-2021-4205e1fc23 advisory.

  - 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. (CVE-2021-3181)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 8 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2021:4181 advisory.

    Mutt is a low resource, highly configurable, text-based MIME e-mail client. Mutt supports most e-mail     storing formats, such as mbox and Maildir, as well as most protocols, including POP3 and IMAP.

    The following packages have been upgraded to a later upstream version: mutt (2.0.7). (BZ#1912614)

    Security Fix(es):

    * mutt: Incorrect handling of invalid initial IMAP responses could lead to an authentication attempt over     unencrypted connection (CVE-2020-28896)

    * mutt: Memory leak when parsing rfc822 group addresses (CVE-2021-3181)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

    Additional Changes:

    For detailed information on changes in this release, see the Red Hat Enterprise Linux 8.5 Release Notes     linked from the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote AlmaLinux 8 host has a package installed that is affected by multiple vulnerabilities as referenced in the ALSA-2021:4181 advisory.

  - Mutt before 2.0.2 and NeoMutt before 2020-11-20 did not ensure that $ssl_force_tls was processed if an     IMAP server's initial server response was invalid. The connection was not properly closed, and the code     could continue attempting to authenticate. This could result in authentication credentials being exposed     on an unencrypted connection, or to a machine-in-the-middle. (CVE-2020-28896)

  - 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. (CVE-2021-3181)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The version of mutt installed on the remote host is prior to 1.5.21-29. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2-2022-1892 advisory.

    Mutt before 1.14.3 allows an IMAP fcc/postpone man-in-the-middle attack via a PREAUTH response.
    (CVE-2020-14093)

    Mutt before 1.14.3 proceeds with a connection even if, in response to a GnuTLS certificate prompt, the     user rejects an expired intermediate certificate. (CVE-2020-14154)

    Mutt before 1.14.4 and NeoMutt before 2020-06-19 have a STARTTLS buffering issue that affects IMAP, SMTP,     and POP3. When a server sends a begin TLS response, the client reads additional data (e.g., from a man-     in-the-middle attacker) and evaluates it in a TLS context, aka response injection. (CVE-2020-14954)

    Mutt before 2.0.2 and NeoMutt before 2020-11-20 did not ensure that  was processed if an IMAP server's     initial server response was invalid. The connection was not properly closed, and the code could continue     attempting to authenticate. This could result in authentication credentials being exposed on an     unencrypted connection, or to a machine-in-the-middle. (CVE-2020-28896)

    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. (CVE-2021-3181)

    A flaw was found in mutt. When reading unencoded messages, mutt uses the line length from the untrusted     input without any validation. This flaw allows an attacker to craft a malicious message, which leads to an     out-of-bounds read, causing data leaks that include fragments of other unrelated messages. (CVE-2022-1328)

Tenable has extracted the preceding description block directly from the tested product security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote MiracleLinux 8 host has a package installed that is affected by multiple vulnerabilities as referenced in the AXSA:2021-2863:01 advisory.

    * mutt: Incorrect handling of invalid initial IMAP responses could lead to an     authentication attempt over unencrypted connection (CVE-2020-28896)
      * mutt: Memory leak when parsing rfc822 group addresses (CVE-2021-3181)

Tenable has extracted the preceding description block directly from the MiracleLinux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

ID	名称	产品	系列	发布时间	最近更新时间	严重程度
145343	SUSE SLED15 / SLES15 Security Update : mutt (SUSE-SU-2021:0195-1)	Nessus	SuSE Local Security Checks	2021/1/25	2021/2/1	medium
145410	Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS : Mutt vulnerability (USN-4703-1)	Nessus	Ubuntu Local Security Checks	2021/1/25	2024/8/27	medium
155036	CentOS 8 : mutt (CESA-2021:4181)	Nessus	CentOS Local Security Checks	2021/11/11	2021/11/11	medium
149198	EulerOS 2.0 SP3 : mutt (EulerOS-SA-2021-1819)	Nessus	Huawei Local Security Checks	2021/4/30	2024/1/2	medium
151783	EulerOS 2.0 SP5 : mutt (EulerOS-SA-2021-2224)	Nessus	Huawei Local Security Checks	2021/7/16	2023/12/7	medium
145480	Debian DSA-4838-1 : mutt - security update	Nessus	Debian Local Security Checks	2021/1/27	2021/1/29	medium
146370	Fedora 33 : 5:mutt (2021-a4f016c6c8)	Nessus	Fedora Local Security Checks	2021/2/10	2021/4/12	medium
180902	Oracle Linux 8 : mutt (ELSA-2021-4181)	Nessus	Oracle Linux Local Security Checks	2023/9/7	2024/10/23	medium
314129	Unity Linux 20.1060e / 20.1070e Security Update: mutt (UTSA-2026-017499)	Nessus	Unity Linux Local Security Checks	2026/5/11	2026/5/11	medium
145291	SUSE SLES12 Security Update : mutt (SUSE-SU-2021:0196-1)	Nessus	SuSE Local Security Checks	2021/1/25	2021/2/1	medium
184975	Rocky Linux 8 : mutt (RLSA-2021:4181)	Nessus	Rocky Linux Local Security Checks	2023/11/7	2023/11/7	medium
153309	EulerOS 2.0 SP2 : mutt (EulerOS-SA-2021-2409)	Nessus	Huawei Local Security Checks	2021/9/14	2023/11/30	medium
145434	openSUSE Security Update : mutt (openSUSE-2021-162)	Nessus	SuSE Local Security Checks	2021/1/26	2021/2/1	medium
146364	Fedora 32 : 5:mutt (2021-4205e1fc23)	Nessus	Fedora Local Security Checks	2021/2/10	2021/4/12	medium
155210	RHEL 8 : mutt (RHSA-2021:4181)	Nessus	Red Hat Local Security Checks	2021/11/11	2024/11/8	medium
157505	AlmaLinux 8 : mutt (ALSA-2021:4181)	Nessus	Alma Linux Local Security Checks	2022/2/9	2022/2/14	medium
168438	Amazon Linux 2 : mutt (ALAS-2022-1892)	Nessus	Amazon Linux Local Security Checks	2022/12/7	2024/12/11	medium
294322	MiracleLinux 8 : mutt-2.0.7-1.el8 (AXSA:2021-2863:01)	Nessus	Miracle Linux Local Security Checks	2026/1/20	2026/1/20	medium

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