CVE-2020-14354 Information

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.

CVSS Vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

Reference

https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4OOYAMJVLLCLXDTHW3V5UXNULZBBK4O6/ https://github.com/c-ares/c-ares/commit/1cc7e83c3bdfaafbc5919c95025592d8de3a170e https://bugzilla.redhat.com/show_bug.cgi?id=1866838 https://c-ares.haxx.se/changelog.html https://packetstormsecurity.com/files/158755/GS20200804145053.txt

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

LOW

Base Severity

3.3