Vulnerability CVE-2014-4943


Published: 2014-07-19   Modified: 2014-07-20

Description:
The PPPoL2TP feature in net/l2tp/l2tp_ppp.c in the Linux kernel through 3.15.6 allows local users to gain privileges by leveraging data-structure differences between an l2tp socket and an inet socket.

See advisories in our WLB2 database:
Topic
Author
Date
Med.
Linux Kernel PPP-over-L2TP Socket Level Handling Crash PoC
Emeric Nasi
05.03.2015

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

CVSS Base Score
Impact Subscore
Exploitability Subscore
6.9/10
10/10
3.4/10
Exploit range
Attack complexity
Authentication
Local
Medium
No required
Confidentiality impact
Integrity impact
Availability impact
Complete
Complete
Complete
Affected software
Linux -> Linux kernel 

 References:
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=3cf521f7dc87c031617fd47e4b7aa2593c2f3daf
http://linux.oracle.com/errata/ELSA-2014-0924.html
http://linux.oracle.com/errata/ELSA-2014-3047.html
http://linux.oracle.com/errata/ELSA-2014-3048.html
http://lists.opensuse.org/opensuse-security-announce/2014-10/msg00006.html
http://lists.opensuse.org/opensuse-security-announce/2014-10/msg00007.html
http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00010.html
http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00025.html
http://openwall.com/lists/oss-security/2014/07/17/1
http://rhn.redhat.com/errata/RHSA-2014-1025.html
http://secunia.com/advisories/59790
http://www.debian.org/security/2014/dsa-2992
http://www.exploit-db.com/exploits/36267
http://www.securitytracker.com/id/1030610
http://xforce.iss.net/xforce/xfdb/94665
https://bugzilla.redhat.com/show_bug.cgi?id=1119458
https://github.com/torvalds/linux/commit/3cf521f7dc87c031617fd47e4b7aa2593c2f3daf

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