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    CVE-2020-28896

    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.

    Published:Nov 20, 2020
    Last Modified:Nov 21, 2024
    EPS:Nov 23, 2020
    EPSS Score:0.00288
    CVSS Score:5.3

    Affected Products

    Vendor
    Debian
    Product
    Debian Linux
    Vendor
    Mutt
    Product
    Mutt
    Vendor
    Neomutt
    Product
    Neomutt
    Vendor
    Redhat
    Product
    Enterprise Linux

    Exploits

    No exploit reference

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    References

    https://github.com/neomutt/neomutt/commit/9c36717a3e2af1f2c1b7242035455ec8112b4b06
    https://github.com/neomutt/neomutt/releases/tag/20201120
    https://gitlab.com/muttmua/mutt/-/commit/04b06aaa3e0cc0022b9b01dbca2863756ebbf59a
    https://gitlab.com/muttmua/mutt/-/commit/d92689088dfe80a290ec836e292376e2d9984f8f
    https://lists.debian.org/debian-lts-announce/2020/11/msg00048.html
    https://security.gentoo.org/glsa/202101-32
    https://github.com/neomutt/neomutt/commit/9c36717a3e2af1f2c1b7242035455ec8112b4b06
    https://github.com/neomutt/neomutt/releases/tag/20201120
    https://gitlab.com/muttmua/mutt/-/commit/04b06aaa3e0cc0022b9b01dbca2863756ebbf59a
    https://gitlab.com/muttmua/mutt/-/commit/d92689088dfe80a290ec836e292376e2d9984f8f
    https://lists.debian.org/debian-lts-announce/2020/11/msg00048.html
    https://security.gentoo.org/glsa/202101-32

    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