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Last updated: 4/1/2015 1:57:06 AM

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Vulnerability Summary for CVE-2012-0064

Original release date: 02/10/2014
Last revised: 02/11/2014


xkeyboard-config before 2.5 in X.Org before 7.6 enables certain XKB debugging functions by default, which allows physically proximate attackers to bypass an X screen lock via keyboard combinations that break the input grab.


CVSS Severity (version 2.0):
CVSS v2 Base Score: 4.6 (MEDIUM) (AV:L/AC:L/Au:N/C:P/I:P/A:P) (legend)
Impact Subscore: 6.4
Exploitability Subscore: 3.9
CVSS Version 2 Metrics:
Access Vector: Locally exploitable
Access Complexity: Low
Authentication: Not required to exploit
Impact Type: Allows unauthorized disclosure of information; Allows unauthorized modification; Allows disruption of service

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External Source: MLIST
Name: [xorg-devel] 20120119 [PATCH SECURITY] XKB: Workaround for CVE-2012-0064: Stop calling UngrabAllDevices().
External Source: SECTRACK
Name: 1026549
External Source: OSVDB
Name: 78445
External Source: CONFIRM
Name: http://www.x.org/wiki/Development/Security/
Type: Advisory
External Source: MLIST
Name: [oss-security] 20120118 Re: Screen locking programs on Xorg 1.11
External Source: MLIST
Name: [xorg-announce] 20120119 xkeyboard-config 2.5
External Source: MISC
Name: http://gu1.aeroxteam.fr/2012/01/19/bypass-screensaver-locker-program-xorg-111-and-up/
External Source: MISC
Name: http://who-t.blogspot.com/2012/01/xkb-breaking-grabs-cve-2012-0064.html
External Source: CONFIRM
Name: https://bugzilla.redhat.com/show_bug.cgi?id=783039

Technical Details

Vulnerability Type (View All)
  • Permissions, Privileges, and Access Control (CWE-264)