c-ares: The c-ares C library defines asynchronous DNS (Domain Name System) requests and provides name resolving API. Securit...
CVE-2020-22217 is fixed in 3 products on 1 platform, first by libc-ares2 1.15.0-1ubuntu0.4, released August 22, 2023. It is not reported as exploited. Patch Radar priority: Routine.
The c-ares C library defines asynchronous DNS (Domain Name System) requests and provides name resolving API. Security Fix(es): * c-ares: Heap buffer over read in ares_parse_soa_reply (CVE-2020-22217) * c-ares: Buffer Underwrite in ares_inet_net_pton() (CVE-2023-31130) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| c-ares · Debian 12.15 (bookworm) | 1.17.1-1 | DEBIAN-CVE-2020-22217 | Aug 22, 2023 |
| c-ares · Debian 13.5 (trixie) | 1.17.1-1 | DEBIAN-CVE-2020-22217 | Aug 22, 2023 |
| c-ares · Debian 14 | 1.17.1-1 | DEBIAN-CVE-2020-22217 | Aug 22, 2023 |
| c-ares · RHEL 8 | 0:1.13.0-9.el8_9.1 | RHSA-2023:7207 | Nov 14, 2023 |
| c-ares · almalinux 8 | 1.13.0-9.el8_9.1 | ALSA-2023:7207 | Nov 14, 2023 |
| c-ares · ol 8 | 0:1.13.0-9.el8_9.1 | ELSA-2023-7207 | Nov 22, 2023 |
| c-ares · rocky 8 | 0:1.13.0-9.el8_9.1 | RLSA-2023:7207 | Nov 28, 2023 |
| c-ares-devel · RHEL 8 | 0:1.13.0-9.el8_9.1 | RHSA-2023:7207 | Nov 14, 2023 |
| c-ares-devel · almalinux 8 | 1.13.0-9.el8_9.1 | ALSA-2023:7207 | Nov 14, 2023 |
| c-ares-devel · ol 8 | 0:1.13.0-9.el8_9.1 | ELSA-2023-7207 | Nov 22, 2023 |
| libc-ares2 · Ubuntu 18.04.6 LTS (bionic) | 1.14.0-1ubuntu0.2+esm3 | libc-ares2 1.14.0-1ubuntu0.2+esm3 | Sep 18, 2026 |
| libc-ares2 · Ubuntu 20.04 LTS (focal) | 1.15.0-1ubuntu0.4 | libc-ares2 1.15.0-1ubuntu0.4 | Aug 22, 2023 |
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