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CVE-2018-14599

Published: 24 August 2018

An issue was discovered in libX11 through 1.6.5. The function XListExtensions in ListExt.c is vulnerable to an off-by-one error caused by malicious server responses, leading to DoS or possibly unspecified other impact.

Priority

Medium

Cvss 3 Severity Score

9.8

Score breakdown

Status

Package Release Status
libx11
Launchpad, Ubuntu, Debian
upstream
Released (1.6.6)
trusty
Released (2:1.6.2-1ubuntu2.1)
xenial
Released (2:1.6.3-1ubuntu2.1)
bionic
Released (2:1.6.4-3ubuntu0.1)
Patches:
other: https://gitlab.freedesktop.org/xorg/lib/libx11/commit/b469da1430cdcee06e31c6251b83aede072a1ff0

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