Permissions, Privileges, and Access Controls in systemd - CVE-2013-4394

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Main Vulnerability Database Vulnerabilities #VU42415

Permissions, Privileges, and Access Controls in systemd - CVE-2013-4394

Published: October 29, 2013 / Updated: August 10, 2020


Vulnerability identifier: #VU42415
CSH Severity: Medium
CVSS v4: 7.5 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2013-4394
CWE-ID: CWE-264
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote non-authenticated attacker to #BASIC_IMPACT#.

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."


Affected software

systemd
Gentoo Linux

How to mitigate CVE-2013-4394

Install update from vendor's website.


External References

Related Security Bulletins