Mutt 1.11.0 through 2.0.x before 2.0.7 (and NeoMutt 2019-10-25 through 2021-05-04) has a $imap_qresync 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 $imap_qresync setting for QRESYNC is not enabled by default.

The remote Ubuntu 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-7204-1 advisory.

    Jeriko One discovered that NeoMutt incorrectly handled certain IMAP and POP3 responses. An attacker could     possibly use this issue to cause NeoMutt to crash, resulting in a denial of service, or the execution of     arbitrary code. This issue only affected Ubuntu 18.04 LTS. (CVE-2018-14349, CVE-2018-14350,     CVE-2018-14351, CVE-2018-14352, CVE-2018-14353, CVE-2018-14354, CVE-2018-14355, CVE-2018-14356,     CVE-2018-14357, CVE-2018-14358, CVE-2018-14359, CVE-2018-14362)

    Jeriko One discovered that NeoMutt incorrectly handled certain NNTP-related operations. An attacker could     possibly use this issue to cause NeoMutt to crash, resulting in denial of service, or the execution of     arbitrary code. This issue only affected Ubuntu 18.04 LTS. (CVE-2018-14360, CVE-2018-14361,     CVE-2018-14363)

    It was discovered that NeoMutt incorrectly processed additional data when communicating with mail servers.
    An attacker could possibly use this issue to access senstive information. This issue only affected Ubuntu     18.04 LTS and Ubuntu 20.04 LTS. (CVE-2020-14954, CVE-2020-28896)

    It was discovered that Neomutt incorrectly handled the IMAP QRSync setting. An attacker could possibly use     this issue to cause NeoMutt to crash, resulting in denial of service. This issue only affected Ubuntu     20.04 LTS. (CVE-2021-32055)

    Tavis Ormandy discovered that NeoMutt incorrectly parsed uuencoded text past the length of the string. An     attacker could possibly use this issue to enable the execution of arbitrary code. This issue only affected     Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, and Ubuntu 22.04 LTS. (CVE-2022-1328)

    It was discovered that NeoMutt did not properly encrypt email headers. An attacker could possibly use this     issue to receive emails that were not intended for them and access sensitive information. This     vulnerability was only fixed in Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, and Ubuntu 24.04 LTS. (CVE-2024-49393,     CVE-2024-49394)

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

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

There are packages installed that are affected by a vulnerability referenced in the following CVE:

  - Mutt 1.11.0 through 2.0.x before 2.0.7 (and NeoMutt 2019-10-25 through 2021-05-04) has a $imap_qresync
    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 $imap_qresync setting for QRESYNC is not enabled by default. (CVE-2021-32055)

The remote Ubuntu 16.04 ESM / 18.04 LTS / 20.04 LTS / 22.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-5392-1 advisory.

    It was discovered that Mutt incorrectly handled certain requests. An attacker could possibly use this     issue to expose sensitive information. This issue only affected Ubuntu 20.04 LTS. (CVE-2021-32055)

    It was discovered that Mutt incorrectly handled certain input. An attacker could possibly use this issue     to cause a crash, or expose sensitive information. (CVE-2022-1328)

Tenable has extracted the preceding description block directly from the Ubuntu 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 host is affected by the vulnerability described in GLSA-202105-05 (Mutt, NeoMutt: Denial of service)

    It was discovered that Mutt, and NeoMutt did not properly handle certain       situations where an IMAP sequence set ends with a comma.
  Impact :

    A remote attacker could entice a user to connect to a malicious IMAP       server to cause a Denial of Service condition, or other unspecified       impacts.
  Workaround :

    There is no known workaround at this time.

ID	Name	Product	Family	Severity
214221	Ubuntu 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS : NeoMutt vulnerabilities (USN-7204-1)	Nessus	Ubuntu Local Security Checks	critical
405704	Alpine: multiple neomutt packages: security update to 20211015-r0	Tenable Cloud Security	Alpine Linux Local Security Checks	critical
405704	Alpine: multiple neomutt packages: security update to 20211015-r0	Tenable Self-Hosted Container Security	Alpine Linux Local Security Checks	critical
160290	Ubuntu 16.04 ESM / 18.04 LTS / 20.04 LTS / 22.04 LTS : Mutt vulnerabilities (USN-5392-1)	Nessus	Ubuntu Local Security Checks	critical
150007	GLSA-202105-05 : Mutt, NeoMutt: Denial of service	Nessus	Gentoo Local Security Checks	critical

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CVE-2021-32055

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