CVE-2017-16944

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    CVE-2017-16944

    Published: 25 Nov 2017Last Modified: 8 Jul 2026

    Summary:

    Details: The receive_msg function in receive.c in the SMTP daemon in Exim 4.88 and 4.89 allows remote attackers to cause a denial of service (infinite loop and stack exhaustion) via vectors involving BDAT commands and an improper check for a '.' character signifying the end of the content, related to the bdat_getc function.

    References: http://www.openwall.com/lists/oss-security/2021/05/04/7, http://www.securitytracker.com/id/1039873, https://www.debian.org/security/2017/dsa-4053, https://www.exploit-db.com/exploits/43184/, https://bugs.exim.org/show_bug.cgi?id=2201, http://openwall.com/lists/oss-security/2017/11/25/1, http://openwall.com/lists/oss-security/2017/11/25/2, http://openwall.com/lists/oss-security/2017/11/25/3, https://lists.exim.org/lurker/message/20171125.034842.d1d75cac.en.html

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 57091745e6d5ce4259c645b3ac63838668d55b7f
    Fixed -None

    Affected versions

    4.88

    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-2017-16944 | CVE-DB