RLSA-2021:4181

    Dashboard / Vulnerabilities / RLSA-2021:4181

    RLSA-2021:4181

    Published: 9 Nov 2021Last Modified: 4 Feb 2026

    Summary: Moderate: mutt security, bug fix, and enhancement update

    Details: 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 Rocky Linux 8.5 Release Notes linked from the References section.

    References: https://errata.rockylinux.org/RLSA-2021:4181, https://bugzilla.redhat.com/show_bug.cgi?id=1890084, https://bugzilla.redhat.com/show_bug.cgi?id=1900826, https://bugzilla.redhat.com/show_bug.cgi?id=1912614, https://bugzilla.redhat.com/show_bug.cgi?id=1920446

    Affected packages

    Package

    Name: mutt

    Purl: pkg:rpm/rocky-linux/mutt?distro=rocky-linux-8-5-legacy&epoch=5

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -5:2.0.7-1.el8

    Affected versions

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    RLSA-2021:4181 | CVE-DB