Out-of-bounds Read in C-Ares

CVE-2020-22217

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.

Vulnerability class: Buffer Overflow

EPSS: 0.008 (54.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

C-ares — versions 1.16.1, 1.17.0
Debian Debian_linux — versions 10.0
N/a — versions n/a

Weakness classification (CWE)

CWE-125 — Out-of-bounds Read

References

cve@mitre.org (Exploit, Patch, Issue Tracking)
cve@mitre.org (mailing-list, Mailing List, Third Party Advisory)

Frequently asked questions

What is CVE-2020-22217?: CVE-2020-22217 is a medium-severity vulnerability in C-Ares, classified under Out-of-bounds Read. CVSS score: 5.9/10. Published 2023-08-22.
How severe is CVE-2020-22217?: Medium severity. CVSS v3 base score is 5.9 out of 10.