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Vulnerability Details : CVE-2012-2136

The sock_alloc_send_pskb function in net/core/sock.c in the Linux kernel before 3.4.5 does not properly validate a certain length value, which allows local users to cause a denial of service (heap-based buffer overflow and system crash) or possibly gain privileges by leveraging access to a TUN/TAP device.
Publish Date : 2012-08-09 Last Update Date : 2013-03-01
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- CVSS Scores & Vulnerability Types

CVSS Score
7.2
Confidentiality Impact Complete (There is total information disclosure, resulting in all system files being revealed.)
Integrity Impact Complete (There is a total compromise of system integrity. There is a complete loss of system protection, resulting in the entire system being compromised.)
Availability Impact Complete (There is a total shutdown of the affected resource. The attacker can render the resource completely unavailable.)
Access Complexity Low (Specialized access conditions or extenuating circumstances do not exist. Very little knowledge or skill is required to exploit. )
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s) Denial Of ServiceOverflowGain privileges
CWE ID 20

- Additional Vendor Supplied Data

Vendor Impact CVSS Score CVSS Vector Report Date Publish Date
Redhat important
7.4
AV:A/AC:M/Au:S/C:C/I:C/A:C 2012-04-19 2012-05-29
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- Related OVAL Definitions

Title Definition Id Class Family
ELSA-2012:0690: kernel security and bug fix update (Important) oval:org.mitre.oval:def:22823 unix
ELSA-2012:0743: kernel security and bug fix update (Important) oval:org.mitre.oval:def:23889 unix
RHSA-2012:0690: kernel security and bug fix update (Important) oval:com.redhat.rhsa:def:20120690 unix
RHSA-2012:0690: kernel security and bug fix update (Important) oval:org.mitre.oval:def:21395 unix
RHSA-2012:0743: kernel security and bug fix update (Important) oval:org.mitre.oval:def:21473 unix
RHSA-2012:0743: kernel security and bug fix update (Important) oval:com.redhat.rhsa:def:20120743 unix
USN-1529-1 -- linux vulnerabilities oval:org.mitre.oval:def:17909 unix
OVAL (Open Vulnerability and Assessment Language) definitions define exactly what should be done to verify a vulnerability or a missing patch. Check out the OVAL definitions if you want to learn what you should do to verify a vulnerability.

- Products Affected By CVE-2012-2136

# Product Type Vendor Product Version Update Edition Language
1 OS Linux Linux Kernel 3.4 Version Details Vulnerabilities
2 OS Linux Linux Kernel 3.4 RC5 Version Details Vulnerabilities
3 OS Linux Linux Kernel 3.4 RC2 Version Details Vulnerabilities
4 OS Linux Linux Kernel 3.4 RC7 Version Details Vulnerabilities
5 OS Linux Linux Kernel 3.4 RC1 Version Details Vulnerabilities
6 OS Linux Linux Kernel 3.4 RC4 Version Details Vulnerabilities
7 OS Linux Linux Kernel 3.4 RC3 Version Details Vulnerabilities
8 OS Linux Linux Kernel 3.4 RC6 Version Details Vulnerabilities
9 OS Linux Linux Kernel 3.4.1 Version Details Vulnerabilities
10 OS Linux Linux Kernel 3.4.2 Version Details Vulnerabilities
11 OS Linux Linux Kernel 3.4.3 Version Details Vulnerabilities
12 OS Linux Linux Kernel 3.4.4 Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Linux Linux Kernel 12

- References For CVE-2012-2136

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=cc9b17ad29ecaa20bfe426a8d4dbfb94b13ff1cc CONFIRM
https://github.com/torvalds/linux/commit/cc9b17ad29ecaa20bfe426a8d4dbfb94b13ff1cc CONFIRM
https://bugzilla.redhat.com/show_bug.cgi?id=816289 CONFIRM
http://rhn.redhat.com/errata/RHSA-2012-1087.html
REDHAT RHSA-2012:1087
http://ubuntu.com/usn/usn-1529-1
UBUNTU USN-1529-1
http://rhn.redhat.com/errata/RHSA-2012-0743.html
REDHAT RHSA-2012:0743
http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.4.5 CONFIRM
http://secunia.com/advisories/50807
SECUNIA 50807
http://www.securityfocus.com/bid/53721
BID 53721 Linux Kernel 'sock_alloc_send_pskb()' Function Heap Buffer Overflow Vulnerability Release Date:2014-03-28
http://www.ubuntu.com/usn/USN-1535-1
UBUNTU USN-1535-1

- Metasploit Modules Related To CVE-2012-2136

There are not any metasploit modules related to this vulnerability (Please visit www.metasploit.com for more information)


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