CVE-2018-14600
First published: Fri Aug 24 2018(Updated: )
An issue was discovered in libX11 through 1.6.5. Functions ListExt.c:XListExtensions and GetFPath.c:XGetFontPath interpret 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. References: <a href="http://www.openwall.com/lists/oss-security/2018/08/21/6">http://www.openwall.com/lists/oss-security/2018/08/21/6</a> <a href="https://lists.x.org/archives/xorg-announce/2018-August/002916.html">https://lists.x.org/archives/xorg-announce/2018-August/002916.html</a> Upstream Patch: <a href="https://cgit.freedesktop.org/xorg/lib/libX11/commit/?id=dbf72805fd9d7b1846fe9a11b46f3994bfc27fea">https://cgit.freedesktop.org/xorg/lib/libX11/commit/?id=dbf72805fd9d7b1846fe9a11b46f3994bfc27fea</a>
Credit: cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| X.Org libX11 | <=1.6.5 | |
| Canonical Ubuntu Linux | =12.04 | |
| Canonical Ubuntu Linux | =14.04 | |
| Canonical Ubuntu Linux | =16.04 | |
| Canonical Ubuntu Linux | =18.04 | |
| Debian Debian Linux | =8.0 | |
| redhat/libX11 | <1.6.6 | 1.6.6 |
| ubuntu/libx11 | <1.6.6 | 1.6.6 |
| ubuntu/libx11 | <2:1.6.2-1ubuntu2.1 | 2:1.6.2-1ubuntu2.1 |
| ubuntu/libx11 | <2:1.6.3-1ubuntu2.1 | 2:1.6.3-1ubuntu2.1 |
| ubuntu/libx11 | <2:1.6.4-3ubuntu0.1 | 2:1.6.4-3ubuntu0.1 |
| debian/libx11 | 2:1.6.7-1+deb10u2 2:1.6.7-1+deb10u4 2:1.7.2-1+deb11u2 2:1.8.4-2+deb12u2 2:1.8.7-1 |
Remedy
https://cgit.freedesktop.org/xorg/lib/libX11/commit/?id=dbf72805fd9d7b1846fe9a11b46f3994bfc27fea
Remedy
https://gitlab.freedesktop.org/xorg/lib/libx11/commit/dbf72805fd9d7b1846fe9a11b46f3994bfc27fea
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Reference Links
- 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=1102068
- https://cgit.freedesktop.org/xorg/lib/libX11/commit/?id=dbf72805fd9d7b1846fe9a11b46f3994bfc27fea
- https://lists.debian.org/debian-lts-announce/2018/08/msg00030.html
- 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/
- https://launchpad.net/bugs/cve/CVE-2018-14600
- https://gitlab.freedesktop.org/xorg/lib/libx11/commit/dbf72805fd9d7b1846fe9a11b46f3994bfc27fea
- https://security-tracker.debian.org/tracker/CVE-2018-14600
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1623243
- https://access.redhat.com/security/cve/cve-2018-14600
- https://bugzilla.redhat.com/show_bug.cgi?id=1623242
- https://ubuntu.com/security/notices/USN-3758-2
- https://ubuntu.com/security/notices/USN-3758-1
- https://www.cve.org/CVERecord?id=CVE-2018-14600
- https://nvd.nist.gov/vuln/detail/CVE-2018-14600
- https://ubuntu.com/security/CVE-2018-14600
Frequently Asked Questions
What is CVE-2018-14600?
CVE-2018-14600 is a vulnerability in libX11 through version 1.6.5 that can lead to DoS or remote code execution.
What is the severity level of CVE-2018-14600?
The severity level of CVE-2018-14600 is critical with a score of 9.8.
Which software versions are affected by CVE-2018-14600?
The affected software versions are up to and exclusive of 1.6.5.
How can I fix CVE-2018-14600?
To fix CVE-2018-14600, update your libX11 package to version 1.6.6 or higher.
Where can I find more information about CVE-2018-14600?
You can find more information about CVE-2018-14600 at the following references: [Reference 1](http://www.openwall.com/lists/oss-security/2018/08/21/6), [Reference 2](https://lists.x.org/archives/xorg-announce/2018-August/002916.html), [Reference 3](https://bugzilla.suse.com/show_bug.cgi?id=1102068).
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