CVE-2018-18956

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    CVE-2018-18956

    Published: 5 Nov 2018Last Modified: 8 Jul 2026

    Summary:

    Details: The ProcessMimeEntity function in util-decode-mime.c in Suricata 4.x before 4.0.6 allows remote attackers to cause a denial of service (segfault and daemon crash) via crafted input to the SMTP parser, as exploited in the wild in November 2018.

    References: https://lists.openinfosecfoundation.org/pipermail/oisf-users/2018-November/016316.html, https://lists.openinfosecfoundation.org/pipermail/oisf-users/2018-October/016227.html, https://redmine.openinfosecfoundation.org/issues/2658#change-10374

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- b8428378ac6fb2365337ae765e19dfc0f4548e4a
    Fixed -ab751da633e2aea44a210c7ac690a8617efa98cd

    Affected versions

    suricata-4.0.5
    suricata-4.0.4
    suricata-4.0.3
    suricata-4.0.2
    suricata-4.0.1
    suricata-4.0.0

    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
    CVE-2018-18956 | CVE-DB