Vulnerability CVE-2013-4300
Published: 2013-09-25   Modified: 2013-09-27

Description:
The scm_check_creds function in net/core/scm.c in the Linux kernel before 3.11 performs a capability check in an incorrect namespace, which allows local users to gain privileges via PID spoofing.

See advisories in our WLB2 database:
Topic
Author
Date
High
Linux Kernel 3.10.10 scm_check_creds() PID spoofing Privileges Escalation
Andy Lutomirski
04.09.2013

Type:

CWE-264

 (Permissions, Privileges, and Access Controls)

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

CVSS Base Score
Impact Subscore
Exploitability Subscore
7.2/10
10/10
3.9/10
Exploit range
Attack complexity
Authentication
Local
Low
No required
Confidentiality impact
Integrity impact
Availability impact
Complete
Complete
Complete
Affected software
Linux -> Linux kernel 

 References:
https://www.kernel.org/pub/linux/kernel/v3.x/patch-3.11.bz2
https://github.com/torvalds/linux/commit/d661684cf6820331feae71146c35da83d794467e
https://bugzilla.redhat.com/show_bug.cgi?id=1004736
http://www.openwall.com/lists/oss-security/2013/09/05/3
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=d661684cf6820331feae71146c35da83d794467e
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