UBUNTU-CVE-2018-20103

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    UBUNTU-CVE-2018-20103

    Published: 12 Dec 2018Last Modified: 4 Feb 2026
    Upstream:
    CVE-2018-20103
    Aliases:
    USN-3858-1

    Summary:

    Details: An issue was discovered in dns.c in HAProxy through 1.8.14. In the case of a compressed pointer, a crafted packet can trigger infinite recursion by making the pointer point to itself, or create a long chain of valid pointers resulting in stack exhaustion.

    References: https://ubuntu.com/security/CVE-2018-20103, https://ubuntu.com/security/notices/USN-3858-1, https://www.cve.org/CVERecord?id=CVE-2018-20103

    Affected packages

    Package

    Name: haproxy

    Purl: pkg:deb/ubuntu/[email protected]?arch=source&distro=bionic

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -1.8.8-1ubuntu0.3

    Affected versions

    1.7.9-1ubuntu1
    1.7.9-1ubuntu2

    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