Use After Free The advisory has been revoked - it doesn't affect any version of package c-ares (opens in a new tab)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-UBUNTU1604-CARES-611130
- published10 Sept 2020
- disclosed13 May 2021
Introduced: 10 Sep 2020
CVE-2020-14354 (opens in a new tab)Amendment
The Ubuntu security team deemed this advisory irrelevant for Ubuntu:16.04.
NVD Description
Note: Versions mentioned in the description apply only to the upstream c-ares package and not the c-ares package as distributed by Ubuntu.
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.
References
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2020-14354
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4OOYAMJVLLCLXDTHW3V5UXNULZBBK4O6/
- https://bugzilla.redhat.com/show_bug.cgi?id=1866838
- https://c-ares.haxx.se/changelog.html
- https://github.com/c-ares/c-ares/commit/1cc7e83c3bdfaafbc5919c95025592d8de3a170e
- https://packetstormsecurity.com/files/158755/GS20200804145053.txt
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4OOYAMJVLLCLXDTHW3V5UXNULZBBK4O6/