CVE-2013-4394

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Summary

CVECVE-2013-4394
StatePUBLISHED
Assignerredhat
Source PriorityCVE Program / NVD first with legacy fallback
Published2013-10-28 22:55:03 UTC
Updated2026-04-29 01:13:23 UTC
DescriptionThe 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."

Risk And Classification

Primary CVSS: v2.0 5.9 from [email protected]

AV:L/AC:H/Au:N/C:C/I:C/A:P

Problem Types: CWE-276 | n/a

CVSS v2.0 Breakdown

Access Vector
Local
Access Complexity
High
Authentication
None
Confidentiality
Complete
Integrity
Complete
Availability
Partial

AV:L/AC:H/Au:N/C:C/I:C/A:P

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Debian Debian Linux 7.0 All All All
Application Systemd Project Systemd All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na N/a affected n/a Not specified

References

ReferenceSourceLinkTags
Debian -- Security Information -- DSA-2777-1 systemd af854a3a-2127-422b-91ae-364da2661108 www.debian.org Third Party Advisory
systemd: Multiple vulnerabilities (GLSA 201612-34) — Gentoo security af854a3a-2127-422b-91ae-364da2661108 security.gentoo.org Third Party Advisory
#725357 - CVE-2013-4392: TOCTOU race condition when updating file permissions and SELinux security contexts - Debian Bug report logs af854a3a-2127-422b-91ae-364da2661108 bugs.debian.org Issue Tracking, Third Party Advisory
oss-security - Re: [CVE request] systemd af854a3a-2127-422b-91ae-364da2661108 www.openwall.com Mailing List, Third Party Advisory
Bug 862324 – CVE-2013-4394 systemd: Improper sanitization of invalid XKB layouts descriptions (privilege escalation when custom PolicyKit local authority file used) af854a3a-2127-422b-91ae-364da2661108 bugzilla.redhat.com Issue Tracking, Patch, Third Party Advisory
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