UBUNTU-CVE-2023-31130

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    UBUNTU-CVE-2023-31130

    Published: 25 May 2023Last Modified: 22 Apr 2026
    Upstream:
    CVE-2023-31130

    Summary:

    Details: c-ares is an asynchronous resolver library. ares_inet_net_pton() is vulnerable to a buffer underflow for certain ipv6 addresses, in particular "0::00:00:00/2" was found to cause an issue. C-ares only uses this function internally for configuration purposes which would require an administrator to configure such an address via ares_set_sortlist(). However, users may externally use ares_inet_net_pton() for other purposes and thus be vulnerable to more severe issues. This issue has been fixed in 1.19.1.

    References: https://ubuntu.com/security/CVE-2023-31130, https://github.com/c-ares/c-ares/security/advisories/GHSA-x6mf-cxr9-8q6v, 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-2023-31130

    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-2023-31130 | CVE-DB