National Cyber Awareness System

Vulnerability Summary for CVE-2012-0056

Overview

The mem_write function in Linux kernel 2.6.39 and other versions, 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.

Impact

CVSS Severity (version 2.0):

CVSS Version 2 Metrics:

References to Advisories, Solutions, and Tools

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External Source: CONFIRM

Name: https://bugzilla.redhat.com/show_bug.cgi?id=782642

Hyperlink:https://bugzilla.redhat.com/show_bug.cgi?id=782642

External Source: BID

Name: 51625

Hyperlink:http://www.securityfocus.com/bid/51625

External Source: REDHAT

Name: RHSA-2012:0061

Hyperlink:http://www.redhat.com/support/errata/RHSA-2012-0061.html

External Source: REDHAT

Name: RHSA-2012:0052

Hyperlink:http://www.redhat.com/support/errata/RHSA-2012-0052.html

External Source: MLIST

Name: [oss-security] 20120122 Re: CVE request: kernel: proc: clean up and fix /proc/<pid>/mem handling

Hyperlink:http://www.openwall.com/lists/oss-security/2012/01/22/4

External Source: MLIST

Name: [oss-security] 20120119 Re: CVE request: kernel: proc: clean up and fix /proc/<pid>/mem handling

Hyperlink:http://www.openwall.com/lists/oss-security/2012/01/19/4

External Source: MLIST

Name: [oss-security] 20120117 Re: CVE request: kernel: proc: clean up and fix /proc/<pid>/mem handling

Hyperlink:http://www.openwall.com/lists/oss-security/2012/01/18/2

External Source: MLIST

Name: [oss-security] 20120118 CVE request: kernel: proc: clean up and fix /proc/<pid>/mem handling

Hyperlink:http://www.openwall.com/lists/oss-security/2012/01/18/1

External Source: UBUNTU

Name: USN-1336-1

Hyperlink:http://ubuntu.com/usn/usn-1336-1

External Source: SECUNIA

Name: 47708

Type: Advisory

Hyperlink:http://secunia.com/advisories/47708

External Source: CONFIRM

Name: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=e268337dfe26dfc7efd422a804dbb27977a3cccc

Hyperlink:http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=e268337dfe26dfc7efd422a804dbb27977a3cccc

External Source: MISC

Name: http://blog.zx2c4.com/749

Hyperlink:http://blog.zx2c4.com/749