CVE-2018-14598

high

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).

References

Advisories

https://usn.ubuntu.com/3758-2/

https://usn.ubuntu.com/3758-1/

https://security.gentoo.org/glsa/201811-01

https://lists.x.org/archives/xorg-announce/2018-August/002916.html

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YGARUV66TS5OOSLR5A76BUB7SDV6GO4F/

https://lists.debian.org/debian-lts-announce/2018/08/msg00030.html

https://cgit.freedesktop.org/xorg/lib/libX11/commit/?id=e83722768fd5c467ef61fa159e8c6278770b45c2

https://bugzilla.suse.com/show_bug.cgi?id=1102073

https://access.redhat.com/errata/RHSA-2019:2079

http://www.securitytracker.com/id/1041543

http://www.securityfocus.com/bid/105177

http://www.openwall.com/lists/oss-security/2018/08/21/6

Details

Source: Mitre, NVD

Published: 2018-08-24

Updated: 2024-11-21

Risk Information

CVSS v2

Base Score: 5

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P

Severity: Medium

CVSS v3

Base Score: 7.5

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

Severity: High

EPSS

EPSS: 0.00848