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    CVE-2020-14354

    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.

    Published:Aug 2, 2020
    Last Modified:Nov 21, 2024
    EPS:May 13, 2021
    EPSS Score:0.00188
    CVSS Score:3.3

    Affected Products

    Vendor
    C-ares
    Product
    C-ares
    Vendor
    Fedoraproject
    Product
    Fedora

    Exploits

    https://bugzilla.redhat.com/show_bug.cgi?id=1866838https://packetstormsecurity.com/files/158755/GS20200804145053.txthttps://bugzilla.redhat.com/show_bug.cgi?id=1866838https://packetstormsecurity.com/files/158755/GS20200804145053.txt

    Related CVEs

    CVE-2026-33630 (CVSS 7.5) — c-ares is an asynchronous resolver library. From ver 1.32.3 until 1.34.7, a use-after-free / double-free in c-…
    CVE-2025-62408 (CVSS 5.9) — c-ares is an asynchronous resolver library. Versions 1.32.3 through 1.34.5 terminate a query after maximum at…
    CVE-2024-25629 (CVSS 4.4) — c-ares is a C library for asynchronous DNS requests. `ares__read_line()` is used to parse local configuration …
    CVE-2020-22217 (CVSS 5.9) — Buffer overflow vulnerability in c-ares before 1_16_1 thru 1_17_0 via function ares_parse_soa_reply in ares_pa…
    CVE-2023-32067 (CVSS 7.5) — c-ares is an asynchronous resolver library. c-ares is vulnerable to denial of service. If a target resolver se…
    CVE-2017-1000381 (CVSS 7.5) — The c-ares function `ares_parse_naptr_reply()`, which is used for parsing NAPTR responses, could be triggered …
    CVE-2016-5180 (CVSS 9.8) — Heap-based buffer overflow in the ares_create_query function in c-ares 1.x before 1.12.0 allows remote attacke…

    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