CVE catalog
CVE-2020-14354
c-ares: CVE-2020-14354
- Severity
- Medium · CVSS 5.9
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.53% · Oct 27, 2026
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.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | c-ares | sid | 1.34.9-1 | fixed |
| Debian | c-ares | forky | 1.34.8-1 | fixed |
| Debian | c-ares | trixie | 1.34.5-1+deb13u1 | fixed |
| Debian | c-ares | trixie-security | 1.34.5-1+deb13u1 | fixed |
| Debian | c-ares | bookworm | 1.18.1-3 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | c-ares | source | sid | 1.16.1-1 | not yet assigned | Not reported | Not reported |
| Debian | c-ares | source | forky | 1.16.1-1 | not yet assigned | Not reported | Not reported |
| Debian | c-ares | source | trixie | 1.16.1-1 | not yet assigned | Not reported | Not reported |
| Debian | c-ares | source | bookworm | 1.16.1-1 | not yet assigned | Not reported | Not reported |
OpenFactory catalog packages
Matching against OpenFactory catalog package versions is in progress.
[Debian 12 (Bookworm)]
- [libc-ares2]Unknown
Source package: [c-ares]
Details (2)
1.18.1-3· amd64 · bookwormFixed · Fixed:
1.16.1-1dsa · c-ares · debian · bookworm; dsa · c-ares · debian · 12
1.18.1-3· arm64 · bookwormFixed · Fixed:
1.16.1-1dsa · c-ares · debian · bookworm; dsa · c-ares · debian · 12
- [libc-ares-dev]Unknown
Source package: [c-ares]
Details (2)
1.18.1-3· amd64 · bookwormFixed · Fixed:
1.16.1-1dsa · c-ares · debian · bookworm; dsa · c-ares · debian · 12
1.18.1-3· arm64 · bookwormFixed · Fixed:
1.16.1-1dsa · c-ares · debian · bookworm; dsa · c-ares · debian · 12
[Debian 13 (Trixie)]
- [libc-ares2]Unknown
Source package: [c-ares]
Details (4)
1.34.5-1+deb13u1· all · trixieFixed · Fixed:
1.16.1-1dsa · c-ares · debian · 13
1.34.5-1+deb13u1· all · trixieFixed · Fixed:
1.16.1-1dsa · c-ares · debian · 13
1.34.5-1+deb13u1· all · trixie-securityFixed · Fixed:
1.16.1-1dsa · c-ares · debian · 13
1.34.5-1+deb13u1· all · trixie-securityFixed · Fixed:
1.16.1-1dsa · c-ares · debian · 13
- [libcares2]Unknown
Source package: [c-ares]
Details (4)
1.34.5-1+deb13u1· amd64 · trixieFixed · Fixed:
1.16.1-1dsa · c-ares · debian · 13
1.34.5-1+deb13u1· arm64 · trixieFixed · Fixed:
1.16.1-1dsa · c-ares · debian · 13
1.34.5-1+deb13u1· amd64 · trixie-securityFixed · Fixed:
1.16.1-1dsa · c-ares · debian · 13
1.34.5-1+deb13u1· arm64 · trixie-securityFixed · Fixed:
1.16.1-1dsa · c-ares · debian · 13
- [libc-ares-dev]Unknown
Source package: [c-ares]
Details (4)
1.34.5-1+deb13u1· amd64 · trixieFixed · Fixed:
1.16.1-1dsa · c-ares · debian · 13
1.34.5-1+deb13u1· arm64 · trixieFixed · Fixed:
1.16.1-1dsa · c-ares · debian · 13
1.34.5-1+deb13u1· amd64 · trixie-securityFixed · Fixed:
1.16.1-1dsa · c-ares · debian · 13
1.34.5-1+deb13u1· arm64 · trixie-securityFixed · Fixed:
1.16.1-1dsa · c-ares · debian · 13
Observed:
References
- [https://osv.dev/vulnerability/DEBIAN-CVE-2020-14354]
- [https://security-tracker.debian.org/tracker/CVE-2020-14354]
- [https://security.access.redhat.com/data/csaf/v2/vex/2020/cve-2020-14354.json]
[Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX]