USN-6164-2

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    USN-6164-2

    Published: 11 Sept 2023Last Modified: 25 Jun 2026

    Summary: c-ares vulnerabilities

    Details: USN-6164-1 fixed several vulnerabilities in c-ares. This update provides the corresponding update for Ubuntu 16.04 LTS and Ubuntu 18.04 LTS. Original advisory details: Hannes Moesl discovered that c-ares incorrectly handled certain ipv6 addresses. An attacker could use this issue to cause c-ares to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2023-31130) Xiang Li discovered that c-ares incorrectly handled certain UDP packets. A remote attacker could possibly use this issue to cause c-res to crash, resulting in a denial of service. (CVE-2023-32067)

    References: https://ubuntu.com/security/notices/USN-6164-2, https://ubuntu.com/security/CVE-2023-31130, https://ubuntu.com/security/CVE-2023-32067

    Affected packages

    Package

    Name: c-ares

    Purl: pkg:deb/ubuntu/c-ares?arch=source&distro=esm-infra%2Fxenial

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -1.10.0-3ubuntu0.2+esm2

    Affected versions

    1.10.0-2
    1.10.0-3
    1.10.0-3ubuntu0.1
    1.10.0-3ubuntu0.2
    1.10.0-3ubuntu0.2+esm1

    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
    USN-6164-2 | CVE-DB