Vulnerability CVE-2013-4327
Published: 2013-10-03   Modified: 2013-10-06

Description:
systemd does not properly use D-Bus for communication with a polkit authority, which allows local users to bypass intended access restrictions by leveraging a PolkitUnixProcess PolkitSubject race condition via a (1) setuid process or (2) pkexec process, a related issue to CVE-2013-4288.

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

CVSS Base Score
Impact Subscore
Exploitability Subscore
4.6/10
6.4/10
3.9/10
Exploit range
Attack complexity
Authentication
Local
Low
No required
Confidentiality impact
Integrity impact
Availability impact
Partial
Partial
Partial
Affected software
Ubuntu developers -> Systemd 
Debian -> Debian linux 
Canonical -> Ubuntu linux 

 References:
http://www.debian.org/security/2013/dsa-2777
http://www.openwall.com/lists/oss-security/2013/09/18/6
http://www.ubuntu.com/usn/USN-1961-1
https://bugzilla.redhat.com/show_bug.cgi?id=1006680
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