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CVE-2016-5180

Published: 3 October 2016

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.

Priority

Medium

Cvss 3 Severity Score

9.8

Score breakdown

Status

Package Release Status
c-ares
Launchpad, Ubuntu, Debian
precise Not vulnerable

trusty
Released (1.10.0-2ubuntu0.1)
upstream
Released (1.12.0)
xenial
Released (1.10.0-3ubuntu0.1)
yakkety
Released (1.11.0-1ubuntu0.1)
zesty Not vulnerable
(1.12.0-1)
Patches:
upstream: https://c-ares.haxx.se/CVE-2016-5180.patch

Severity score breakdown

Parameter Value
Base score 9.8
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