CVE-2020-14354

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    CVE-2020-14354

    Published: 13 May 2021Last Modified: 8 Jul 2026

    Summary:

    Details: A possible use-after-free and double-free in c-ares lib version 1.16.0 if ares_destroy() is called prior to ares_getaddrinfo() completing. This flaw possibly allows an attacker to crash the service that uses c-ares lib. The highest threat from this vulnerability is to this service availability.

    References: https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4OOYAMJVLLCLXDTHW3V5UXNULZBBK4O6/, https://c-ares.haxx.se/changelog.html, https://bugzilla.redhat.com/show_bug.cgi?id=1866838, https://github.com/c-ares/c-ares/commit/1cc7e83c3bdfaafbc5919c95025592d8de3a170e, https://packetstormsecurity.com/files/158755/GS20200804145053.txt

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 077a587dccbe2f0d8a1987fbd3525333705c2249
    Fixed -None

    Affected versions

    1.16.0

    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-2020-14354 | CVE-DB