CVE-2020-14354

Published: 13 May 2021

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.

Priority

Cvss 3 Severity Score

3.3

Score breakdown

Status

Package	Release	Status
c-ares Launchpad, Ubuntu, Debian	bionic	Not vulnerable (code not present)
	focal	Not vulnerable (code not present)
	trusty	Does not exist
	upstream	Released (1.16.1-1)
	xenial	Not vulnerable (code not present)

Severity score breakdown

Parameter	Value
Base score	3.3
Attack vector	Local
Attack complexity	Low
Privileges required	Low
User interaction	None
Scope	Unchanged
Confidentiality	None
Integrity impact	None
Availability impact	Low
Vector	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

References

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