| Name | CVE-2023-31130 |
| Description | 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. |
| 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-x6mf-cxr9-8q6v
https://github.com/c-ares/c-ares/commit/f22cc01039b6473b736d3bf438f56a2654cdf2b2 (cares-1_19_1)