Vulnerability · Published May 13, 2021 · Assigned by redhat
CVE-2020-14354
Low 3.3
In plain English
A low-severity buffer overflow in c-ares. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 45% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)3.3Low
Exploit odds (30 days)0.5%top 55.1% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | c-ares | 1.16.1-1 | DEBIAN-CVE-2020-14354 |
| Debian:13 | c-ares | 1.16.1-1 | DEBIAN-CVE-2020-14354 |
| Debian:14 | c-ares | 1.16.1-1 | DEBIAN-CVE-2020-14354 |
Affected products (as reported)
Weakness: CWE-120
References
- FEDORA-2020-43d5a372fc vendor-advisory, x_refsource_FEDORA
- https://bugzilla.redhat.com/show_bug.cgi?id=1866838 x_refsource_MISC
- https://packetstormsecurity.com/files/158755/GS20200804145053.txt x_refsource_MISC
- https://c-ares.haxx.se/changelog.html x_refsource_MISC
- https://github.com/c-ares/c-ares/commit/1cc7e83c3bdfaafbc5919c95025592d8de3a170e x_refsource_MISC