CVE-2018-14598

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).

Category

7.5
CVSS
Severity: High
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.85% Top 30%
Vendor Advisory ubuntu.com Vendor Advisory gentoo.org Vendor Advisory ubuntu.com Vendor Advisory fedoraproject.org Vendor Advisory redhat.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://usn.ubuntu.com/3758-2/ third party advisory vendor advisory
https://bugzilla.suse.com/show_bug.cgi?id=1102073 issue tracking third party advisory patch
https://security.gentoo.org/glsa/201811-01 third party advisory vendor advisory
http://www.securityfocus.com/bid/105177 vdb entry third party advisory
https://cgit.freedesktop.org/xorg/lib/libX11/commit/?id=e83722768fd5c467ef61fa159e8c6278770b45c2 third party advisory patch
http://www.openwall.com/lists/oss-security/2018/08/21/6 third party advisory mailing list
http://www.securitytracker.com/id/1041543 vdb entry third party advisory
https://lists.debian.org/debian-lts-announce/2018/08/msg00030.html third party advisory mailing list
https://lists.x.org/archives/xorg-announce/2018-August/002916.html third party advisory mailing list
https://usn.ubuntu.com/3758-1/ third party advisory vendor advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YGARUV66TS5OOSLR5A76BUB7SDV6GO4F/ vendor advisory
https://access.redhat.com/errata/RHSA-2019:2079 vendor advisory

Frequently Asked Questions

What is the severity of CVE-2018-14598?
CVE-2018-14598 has been scored as a high severity vulnerability.
How to fix CVE-2018-14598?
To fix CVE-2018-14598, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2018-14598 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2018-14598 is being actively exploited. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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