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CVE-2013-4394

Date: October 28, 2013

The SetX11Keyboard function in systemd, when PolicyKit Local Authority (PKLA) is used to change the group permissions on the X Keyboard Extension (XKB) layouts description, allows local users in the group to modify the Xorg X11 Server configuration file and possibly gain privileges via vectors involving "special and control characters."

Language: C

Severity Score

Related Resources (8)

https://security-tracker.debian.org/tracker/CVE-2013-4394
https://bugzilla.redhat.com/show_bug.cgi?id=862324
https://nvd.nist.gov/vuln/detail/CVE-2013-4394
http://www.debian.org/security/2013/dsa-2777
https://security.gentoo.org/glsa/201612-34
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=725357
http://www.openwall.com/lists/oss-security/2013/10/01/9
https://www.mend.io/vulnerability-database/CVE-2013-4394

Severity Score

Weakness Type (CWE)

Permissions, Privileges, and Access Control

CWE-264

Incorrect Default Permissions

CWE-276

CVSS v3.1

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

CVSS v2

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

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