CVE-2020-14354: Use After Free

May 13, 2021 (updated May 20, 2021)

A possible use-after-free and double-free in c-ares lib 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

bugzilla.redhat.com/show_bug.cgi?id=1866838
c-ares.haxx.se/changelog.html
nvd.nist.gov/vuln/detail/CVE-2020-14354
packetstormsecurity.com/files/158755/GS20200804145053.txt

Code Behaviors & Features

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