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Vulnerability Details : CVE-2012-0056

The mem_write function in the Linux kernel before 3.2.2, when ASLR is disabled, does not properly check permissions when writing to /proc/<pid>/mem, which allows local users to gain privileges by modifying process memory, as demonstrated by Mempodipper.
Publish Date : 2012-01-27 Last Update Date : 2014-07-17
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- CVSS Scores & Vulnerability Types

CVSS Score
6.9
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 Medium (The access conditions are somewhat specialized. Some preconditions must be satistified to exploit)
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s) Gain privileges
CWE ID 264

- Additional Vendor Supplied Data

Vendor Impact CVSS Score CVSS Vector Report Date Publish Date
Redhat important
7.2
AV:L/AC:L/Au:N/C:C/I:C/A:C 2012-01-18 2012-01-18
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- Related OVAL Definitions

Title Definition Id Class Family
ELSA-2012:0052: kernel security and bug fix update (Important) oval:org.mitre.oval:def:23795 unix
RHSA-2012:0052: kernel security and bug fix update (Important) oval:org.mitre.oval:def:21212 unix
RHSA-2012:0052: kernel security and bug fix update (Important) oval:com.redhat.rhsa:def:20120052 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-2012-0056

# Product Type Vendor Product Version Update Edition Language
1 OS Linux Linux Kernel 2.6.39 Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Linux Linux Kernel 1

- References For CVE-2012-0056

http://blog.zx2c4.com/749
http://secunia.com/advisories/47708
SECUNIA 47708
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=e268337dfe26dfc7efd422a804dbb27977a3cccc CONFIRM
http://ubuntu.com/usn/usn-1336-1
UBUNTU USN-1336-1
http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.2.2 CONFIRM
http://www.openwall.com/lists/oss-security/2012/01/18/1
MLIST [oss-security] 20120118 CVE request: kernel: proc: clean up and fix /proc/<pid>/mem handling
http://www.openwall.com/lists/oss-security/2012/01/18/2
MLIST [oss-security] 20120117 Re: CVE request: kernel: proc: clean up and fix /proc/<pid>/mem handling
http://www.redhat.com/support/errata/RHSA-2012-0061.html
REDHAT RHSA-2012:0061
http://www.redhat.com/support/errata/RHSA-2012-0052.html
REDHAT RHSA-2012:0052
http://www.openwall.com/lists/oss-security/2012/01/22/4
MLIST [oss-security] 20120122 Re: CVE request: kernel: proc: clean up and fix /proc/<pid>/mem handling
http://www.openwall.com/lists/oss-security/2012/01/19/4
MLIST [oss-security] 20120119 Re: CVE request: kernel: proc: clean up and fix /proc/<pid>/mem handling
https://bugzilla.redhat.com/show_bug.cgi?id=782642 CONFIRM
http://www.securityfocus.com/bid/51625
BID 51625 Linux Kernel CVE-2012-0056 Local Privilege Escalation Vulnerability Release Date:2013-11-27

- Metasploit Modules Related To CVE-2012-0056

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


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