CVE-2018-14600

high-risk
Published 2018-08-24

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.

Do I need to act?

!
11.0% chance of exploitation in next 30 days
EPSS score — higher than 89% of all CVEs
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
9
CVSS 9.8/10 Critical
NETWORK / LOW complexity

Affected Products (6)

Libx11

Affected Vendors

Debian X.Org Canonical

References (22)

Mailing List http://www.openwall.com/lists/oss-security/2018/08/21/6
Third Party Advisory http://www.securityfocus.com/bid/105177
Third Party Advisory http://www.securitytracker.com/id/1041543
https://access.redhat.com/errata/RHSA-2019:2079
Issue Tracking https://bugzilla.suse.com/show_bug.cgi?id=1102068
Patch https://cgit.freedesktop.org/xorg/lib/libX11/commit/?id=dbf72805fd9d7b1846fe9a11...
Mailing List https://lists.debian.org/debian-lts-announce/2018/08/msg00030.html
Third Party Advisory https://lists.x.org/archives/xorg-announce/2018-August/002916.html
Third Party Advisory https://security.gentoo.org/glsa/201811-01
Third Party Advisory https://usn.ubuntu.com/3758-1/
Third Party Advisory https://usn.ubuntu.com/3758-2/
Mailing List http://www.openwall.com/lists/oss-security/2018/08/21/6
Third Party Advisory http://www.securityfocus.com/bid/105177
Third Party Advisory http://www.securitytracker.com/id/1041543
https://access.redhat.com/errata/RHSA-2019:2079
Issue Tracking https://bugzilla.suse.com/show_bug.cgi?id=1102068
Patch https://cgit.freedesktop.org/xorg/lib/libX11/commit/?id=dbf72805fd9d7b1846fe9a11...
Mailing List https://lists.debian.org/debian-lts-announce/2018/08/msg00030.html
Third Party Advisory https://lists.x.org/archives/xorg-announce/2018-August/002916.html
Third Party Advisory https://security.gentoo.org/glsa/201811-01
and 2 more references
56
/ 100
high-risk
Severity 32/34 · Critical
Exploitability 11/34 · Low
Exposure 13/34 · Low