Vulnerability CVE-2012-0871
Published: 2014-04-18   Modified: 2014-04-19

Description:
The session_link_x11_socket function in login/logind-session.c in systemd-logind in systemd, possibly 37 and earlier, allows local users to create or overwrite arbitrary files via a symlink attack on the X11 user directory in /run/user/.

See advisories in our WLB2 database:
Topic
Author
Date
Med.
systemd create or overwrite arbitrary files
Sebastian Krahme...
21.04.2014

Type:

CWE-59

 (Improper Link Resolution Before File Access ('Link Following'))

CVSS2 => (AV:L/AC:M/Au:N/C:N/I:C/A:C)

CVSS Base Score
Impact Subscore
Exploitability Subscore
6.3/10
9.2/10
3.4/10
Exploit range
Attack complexity
Authentication
Local
Medium
No required
Confidentiality impact
Integrity impact
Availability impact
None
Complete
Complete
Affected software
Opensuse -> Opensuse 
Novell -> Opensuse 
Lennart poettering -> Systemd 

 References:
http://cgit.freedesktop.org/systemd/systemd/commit/?id=fc3c1c6e091ea16ad5600b145201ec535bbb5d7c
http://lists.opensuse.org/opensuse-security-announce/2012-02/msg00030.html
https://bugzilla.novell.com/show_bug.cgi?id=747154
https://bugzilla.redhat.com/show_bug.cgi?id=795853
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