UBUNTU-CVE-2023-32067

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    UBUNTU-CVE-2023-32067

    Published: 25 May 2023Last Modified: 22 Apr 2026
    Upstream:
    CVE-2023-32067

    Summary:

    Details: c-ares is an asynchronous resolver library. c-ares is vulnerable to denial of service. If a target resolver sends a query, the attacker forges a malformed UDP packet with a length of 0 and returns them to the target resolver. The target resolver erroneously interprets the 0 length as a graceful shutdown of the connection. This issue has been patched in version 1.19.1.

    References: https://ubuntu.com/security/CVE-2023-32067, https://github.com/c-ares/c-ares/security/advisories/GHSA-9g78-jv2r-p7vc, https://www.openwall.com/lists/oss-security/2023/05/22/2, https://ubuntu.com/security/notices/USN-6164-1, https://ubuntu.com/security/notices/USN-6164-2, https://www.cve.org/CVERecord?id=CVE-2023-32067

    Affected packages

    Package

    Name: c-ares

    Purl: pkg:deb/ubuntu/[email protected]+esm2?arch=source&distro=esm-infra/xenial

    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
    UBUNTU-CVE-2023-32067 | CVE-DB