CVE-2016-5180

Publication date 3 October 2016

Last updated 24 July 2024

Ubuntu priority

Cvss 3 Severity Score

Heap-based buffer overflow in the ares_create_query function in c-ares 1.x before 1.12.0 allows remote attackers to cause a denial of service (out-of-bounds write) or possibly execute arbitrary code via a hostname with an escaped trailing dot.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
c-ares	17.04 zesty	Not affected
	16.10 yakkety	Fixed 1.11.0-1ubuntu0.1
	16.04 LTS xenial	Fixed 1.10.0-3ubuntu0.1
	14.04 LTS trusty	Fixed 1.10.0-2ubuntu0.1
	12.04 LTS precise	Not affected

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package	Patch details
c-ares	Upstream: https://c-ares.haxx.se/CVE-2016-5180.patch

Severity score breakdown

Parameter	Value
Base score	9.8 · Critical
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality	High
Integrity impact	High
Availability impact	High
Vector	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

Related Ubuntu Security Notices (USN)

USN-3143-1
c-ares vulnerability
30 November 2016