Vulnerability · Published Aug 22, 2023 · Assigned by mitre
CVE-2020-22217
Medium 5.9
In plain English
A medium-severity security flaw in the c-ares package (AlmaLinux). Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 1.0% (higher than 62% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)5.9Medium
Exploit odds (30 days)1.0%top 37.7% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
Buffer overflow vulnerability in c-ares before 1_16_1 thru 1_17_0 via function ares_parse_soa_reply in ares_parse_soa_reply.c.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux:8 | c-ares | 1.13.0-9.el8_9.1 | ALSA-2023:7207 |
| AlmaLinux:8 | c-ares-devel | 1.13.0-9.el8_9.1 | ALSA-2023:7207 |
| Debian:12 | c-ares | 1.17.1-1 | DEBIAN-CVE-2020-22217 |
| Debian:13 | c-ares | 1.17.1-1 | DEBIAN-CVE-2020-22217 |
| Debian:14 | c-ares | 1.17.1-1 | DEBIAN-CVE-2020-22217 |
| Rocky Linux:8 | c-ares | 0:1.13.0-9.el8_9.1 | RLSA-2023:7207 |
| Ubuntu:22.04:LTS | c-ares | 1.18.1-1ubuntu0.22.04.4 | USN-8951-1 |
| Ubuntu:24.04:LTS | c-ares | 1.27.0-1.0ubuntu1.1 | USN-8951-1 |
| Ubuntu:26.04:LTS | c-ares | 1.34.6-1ubuntu0.2 | USN-8951-1 |