| Name | CVE-2020-14354 |
| Description | 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. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
Vulnerable and fixed packages
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 | fixed |
| 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 | jessie | (not affected) | | | |
| c-ares | source | stretch | (not affected) | | | |
| c-ares | source | buster | (not affected) | | | |
| c-ares | source | (unstable) | 1.16.1-1 | | | |
Notes
[buster] - c-ares <not-affected> (Vulnerable code introduced later)
[stretch] - c-ares <not-affected> (Vulnerable code introduced later)
https://bugzilla.redhat.com/show_bug.cgi?id=1866838
Introduced in: https://github.com/c-ares/c-ares/commit/dbd4c441fb7babad5c56f455d720af38e20546bc (1.16.0)
Fixed by: https://github.com/c-ares/c-ares/commit/1cc7e83c3bdfaafbc5919c95025592d8de3a170e (1.16.1)
[jessie] - c-ares <not-affected> (Vulnerable code introduced later)