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High DLA-3471-1 2 CVEs

c-ares - security update

Published Jun 26, 2023 · Updated Mar 9, 2026

Ecosystem: Debian

Fixed packages 1

ReleasePackageFixed in
Debian · 10 c-ares 1.14.0-1+deb10u3

Vulnerabilities 2

  • High 7.5
    CVE-2023-32067

    0-byte UDP payload DoS in c-ares

    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 i…

    c-ares c-ares nodejs nodejs18 Debian Ubuntu Azure Linux Wolfi
  • Medium 4.1
    CVE-2023-31130

    Buffer Underwrite in ares_inet_net_pton()

    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 wh…

    c-ares c-ares nodejs nodejs18 Debian Ubuntu Azure Linux Wolfi