Incorrect Authorization Affecting xorg-server package, versions <2:1.19.6-1ubuntu4.2
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-UBUNTU1804-XORGSERVER-327209
- published28 Oct 2018
- disclosed25 Oct 2018
Introduced: 25 Oct 2018
CVE-2018-14665 (opens in a new tab)How to fix?
Upgrade Ubuntu:18.04 xorg-server to version 2:1.19.6-1ubuntu4.2 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream xorg-server package and not the xorg-server package as distributed by Ubuntu.
See How to fix? for Ubuntu:18.04 relevant fixed versions and status.
A flaw was found in xorg-x11-server before 1.20.3. An incorrect permission check for -modulepath and -logfile options when starting Xorg. X server allows unprivileged users with the ability to log in to the system via physical console to escalate their privileges and run arbitrary code under root privileges.
References
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2018-14665
- https://gitlab.freedesktop.org/xorg/xserver/commit/50c0cf885a6e91c0ea71fb49fa8f1b7c86fe330e
- https://gitlab.freedesktop.org/xorg/xserver/commit/8a59e3b7dbb30532a7c3769c555e00d7c4301170
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-14665
- https://www.debian.org/security/2018/dsa-4328
- https://security-tracker.debian.org/tracker/CVE-2018-14665
- https://www.exploit-db.com/exploits/45697/
- https://www.exploit-db.com/exploits/45742/
- https://www.exploit-db.com/exploits/45832/
- https://www.exploit-db.com/exploits/45908/
- https://www.exploit-db.com/exploits/45922/
- https://www.exploit-db.com/exploits/45938/
- https://www.exploit-db.com/exploits/46142/
- https://security.gentoo.org/glsa/201810-09
- http://packetstormsecurity.com/files/154942/Xorg-X11-Server-SUID-modulepath-Privilege-Escalation.html
- http://packetstormsecurity.com/files/155276/Xorg-X11-Server-Local-Privilege-Escalation.html
- https://www.securepatterns.com/2018/10/cve-2018-14665-xorg-x-server.html
- https://lists.x.org/archives/xorg-announce/2018-October/002927.html
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-14665
- https://access.redhat.com/errata/RHSA-2018:3410
- http://www.securityfocus.com/bid/105741
- http://www.securitytracker.com/id/1041948
- https://usn.ubuntu.com/3802-1/
- https://www.exploit-db.com/exploits/46142
- https://github.com/jas502n/CVE-2018-14665