CVE-2018-14600 Information

Description

An issue was discovered in libX11 through 1.6.5. The function XListExtensions in ListExt.c interprets a variable as signed instead of unsigned resulting in an out-of-bounds write (of up to 128 bytes) leading to DoS or remote code execution.

CVSS Vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Reference

http://www.openwall.com/lists/oss-security/2018/08/21/6 http://www.securityfocus.com/bid/105177 http://www.securitytracker.com/id/1041543 https://access.redhat.com/errata/RHSA-2019:2079 https://bugzilla.suse.com/show_bug.cgi?id=1102068 https://cgit.freedesktop.org/xorg/lib/libX11/commit/?id=dbf72805fd9d7b1846fe9a11b46f3994bfc27fea https://lists.debian.org/debian-lts-announce/2018/08/msg00030.html https://lists.x.org/archives/xorg-announce/2018-August/002916.html https://security.gentoo.org/glsa/201811-01 https://usn.ubuntu.com/3758-1/ https://usn.ubuntu.com/3758-2/

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

9.8