Vulnerability Monitor

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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.

Published

2012-01-27T15:55:04.813

Last Modified

2025-04-11T00:51:21.963

Status

Deferred

Source

[email protected]

Severity

CVSSv2: 6.9 (MEDIUM)

CVSSv2 Vector

AV:L/AC:M/Au:N/C:C/I:C/A:C

Access Vector: LOCAL
Access Complexity: MEDIUM
Authentication: NONE
Confidentiality Impact: COMPLETE
Integrity Impact: COMPLETE
Availability Impact: COMPLETE

Exploitability Score

3.4

Impact Score

10.0

Weaknesses

Type: Primary
CWE-264

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Operating System	linux	linux_kernel	< 3.0.18	Yes
Operating System	linux	linux_kernel	< 3.2.2	Yes

References

http://blog.zx2c4.com/749 Third Party Advisory ([email protected])
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commitdiff%3Bh=e268337dfe26dfc7efd422a804dbb27977a3cccc Vendor Advisory ([email protected])
http://secunia.com/advisories/47708 Broken Link ([email protected])
http://ubuntu.com/usn/usn-1336-1 Third Party Advisory ([email protected])
http://www.kb.cert.org/vuls/id/470151 Third Party Advisory, US Government Resource ([email protected])
http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.2.2 Vendor Advisory ([email protected])
http://www.openwall.com/lists/oss-security/2012/01/18/1 Mailing List, Third Party Advisory ([email protected])
http://www.openwall.com/lists/oss-security/2012/01/18/2 Mailing List, Third Party Advisory ([email protected])
http://www.openwall.com/lists/oss-security/2012/01/19/4 Mailing List, Third Party Advisory ([email protected])
http://www.openwall.com/lists/oss-security/2012/01/22/4 Mailing List, Third Party Advisory ([email protected])
http://www.redhat.com/support/errata/RHSA-2012-0052.html Third Party Advisory ([email protected])
http://www.redhat.com/support/errata/RHSA-2012-0061.html Third Party Advisory ([email protected])
http://www.securityfocus.com/bid/51625 Third Party Advisory, VDB Entry ([email protected])
https://bugzilla.redhat.com/show_bug.cgi?id=782642 Issue Tracking, Third Party Advisory ([email protected])
http://blog.zx2c4.com/749 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commitdiff%3Bh=e268337dfe26dfc7efd422a804dbb27977a3cccc Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://secunia.com/advisories/47708 Broken Link (af854a3a-2127-422b-91ae-364da2661108)
http://ubuntu.com/usn/usn-1336-1 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.kb.cert.org/vuls/id/470151 Third Party Advisory, US Government Resource (af854a3a-2127-422b-91ae-364da2661108)
http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.2.2 Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.openwall.com/lists/oss-security/2012/01/18/1 Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.openwall.com/lists/oss-security/2012/01/18/2 Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.openwall.com/lists/oss-security/2012/01/19/4 Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.openwall.com/lists/oss-security/2012/01/22/4 Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.redhat.com/support/errata/RHSA-2012-0052.html Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.redhat.com/support/errata/RHSA-2012-0061.html Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.securityfocus.com/bid/51625 Third Party Advisory, VDB Entry (af854a3a-2127-422b-91ae-364da2661108)
https://bugzilla.redhat.com/show_bug.cgi?id=782642 Issue Tracking, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)