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CVE-2018-14665

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Date: October 25, 2018

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.

Language: C

Severity Score

Related Resources (26)

https://nvd.nist.gov/vuln/detail/CVE-2018-14665
http://packetstormsecurity.com/files/154942/Xorg-X11-Server-SUID-modulepath-Privilege-Escalation.html
http://www.securityfocus.com/bid/105741
https://usn.ubuntu.com/3802-1/
https://www.debian.org/security/2018/dsa-4328
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-14665
https://www.securepatterns.com/2018/10/cve-2018-14665-xorg-x-server.html
https://security.gentoo.org/glsa/201810-09
http://packetstormsecurity.com/files/155276/Xorg-X11-Server-Local-Privilege-Escalation.html
https://lists.x.org/archives/xorg-announce/2018-October/002927.html
https://people.canonical.com/~ubuntu-security/cve/CVE-2018-14665
https://access.redhat.com/security/cve/CVE-2018-14665
https://gitlab.freedesktop.org/xorg/xserver/commit/50c0cf885a6e91c0ea71fb49fa8f1b7c86fe330e
https://www.exploit-db.com/exploits/45922/
http://www.securitytracker.com/id/1041948
https://security-tracker.debian.org/tracker/CVE-2018-14665
https://www.exploit-db.com/exploits/45832/
https://www.exploit-db.com/exploits/45742/
https://www.exploit-db.com/exploits/45697/
https://www.exploit-db.com/exploits/46142/
https://gitlab.freedesktop.org/xorg/xserver/commit/8a59e3b7dbb30532a7c3769c555e00d7c4301170
https://www.exploit-db.com/exploits/45938/
https://www.exploit-db.com/exploits/45908/
https://access.redhat.com/errata/RHSA-2018:3410
https://www.mend.io/resources/blog/top-5-new-open-source-security-vulnerabilities-in-october-2018
https://www.mend.io/vulnerability-database/CVE-2018-14665

Severity Score

Weakness Type (CWE)

Permissions, Privileges, and Access Control

CWE-264

Incorrect Authorization

CWE-863

Top Fix

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CVSS v3.1

Base Score:
Attack Vector (AV): PHYSICAL
Attack Complexity (AC): LOW
Privileges Required (PR): LOW
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): LOCAL
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): COMPLETE
Integrity (I): COMPLETE
Availability (A): COMPLETE
Additional information:

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