CVE-2018-14598 Information

Description

An issue was discovered in XListExtensions in ListExt.c in libX11 through 1.6.5. A malicious server can send a reply in which the first string overflows causing a variable to be set to NULL that will be freed later on leading to DoS (segmentation fault).

CVSS Vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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=1102073 https://cgit.freedesktop.org/xorg/lib/libX11/commit/?id=e83722768fd5c467ef61fa159e8c6278770b45c2 https://lists.debian.org/debian-lts-announce/2018/08/msg00030.html https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/YGARUV66TS5OOSLR5A76BUB7SDV6GO4F/ 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

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

7.5