CVE-2018-14599

critical

Description

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.

References

Advisories
More

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=b469da1430cdcee06e31c6251b83aede072a1ff0

https://bugzilla.suse.com/show_bug.cgi?id=1102062

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

https://euvd.enisa.europa.eu/vulnerability/EUVD-2018-6506

Details

Source: Mitre, NVD

Published: 2018-08-24

Updated: 2026-06-17

Risk Information

CVSS v2

Base Score: 7.5

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

Severity: High

CVSS v3

Base Score: 9.8

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Severity: Critical

EPSS

EPSS: 0.04799

Detections

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