Name | CVE-2023-32067 |
Description | 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. |
Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
References | DLA-3471-1, DSA-5419-1, ELA-883-1 |
The table below lists information on source packages.
Source Package | Release | Version | Status |
---|---|---|---|
c-ares (PTS) | jessie, jessie (lts) | 1.10.0-2+deb8u7 | fixed |
stretch (security) | 1.12.0-1+deb9u2 | vulnerable | |
stretch (lts), stretch | 1.12.0-1+deb9u6 | fixed | |
buster (security), buster, buster (lts) | 1.14.0-1+deb10u4 | fixed | |
bullseye (security), bullseye | 1.17.1-1+deb11u3 | fixed | |
bookworm | 1.18.1-3 | fixed | |
sid, trixie | 1.34.2-1 | fixed |
The information below is based on the following data on fixed versions.
Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
---|---|---|---|---|---|---|
c-ares | source | experimental | 1.19.1-1 | |||
c-ares | source | jessie | 1.10.0-2+deb8u5 | ELA-883-1 | ||
c-ares | source | stretch | 1.12.0-1+deb9u4 | ELA-883-1 | ||
c-ares | source | buster | 1.14.0-1+deb10u3 | DLA-3471-1 | ||
c-ares | source | bullseye | 1.17.1-1+deb11u3 | DSA-5419-1 | ||
c-ares | source | (unstable) | 1.18.1-3 |
https://github.com/c-ares/c-ares/security/advisories/GHSA-9g78-jv2r-p7vc
https://github.com/c-ares/c-ares/commit/b9b8413cfdb70a3f99e1573333b23052d57ec1ae (cares-1_19_1)