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
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.010 (60.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 61st percentile — 60.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.010 · newest: 0.010 · change: 0.000
Affected products
- C-Ares — versions 1.16.1, 1.17.0
- Debian Linux — versions 10.0
Weakness classification (CWE)
References
- github.com/c-ares/c-ares/issues/333 (Exploit, Patch, Issue Tracking)
- lists.debian.org/debian-lts-announce/2023/09/msg00014.html (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.