CVE-2012-0056

Description

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.

Category

6.9
CVSS
Severity: Medium
CVSS 2.0 •
EPSS 80.31% Top 5%
Vendor Advisory ubuntu.com Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory kernel.org Vendor Advisory kernel.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://www.securityfocus.com/bid/51625 third party advisory vdb entry
http://blog.zx2c4.com/749 third party advisory
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commitdiff%3Bh=e268337dfe26dfc7efd422a804dbb27977a3cccc vendor advisory
http://ubuntu.com/usn/usn-1336-1 third party advisory vendor advisory
http://www.redhat.com/support/errata/RHSA-2012-0052.html third party advisory vendor advisory
http://secunia.com/advisories/47708 third party advisory broken link
http://www.openwall.com/lists/oss-security/2012/01/19/4 third party advisory mailing list
http://www.openwall.com/lists/oss-security/2012/01/18/2 third party advisory mailing list
http://www.redhat.com/support/errata/RHSA-2012-0061.html third party advisory vendor advisory
http://www.openwall.com/lists/oss-security/2012/01/18/1 third party advisory mailing list
http://www.openwall.com/lists/oss-security/2012/01/22/4 third party advisory mailing list
https://bugzilla.redhat.com/show_bug.cgi?id=782642 third party advisory issue tracking
http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.2.2 vendor advisory
http://www.kb.cert.org/vuls/id/470151 third party advisory us government resource

Frequently Asked Questions

What is the severity of CVE-2012-0056?
CVE-2012-0056 has been scored as a medium severity vulnerability.
How to fix CVE-2012-0056?
To fix CVE-2012-0056, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2012-0056 being actively exploited in the wild?
It is possible that CVE-2012-0056 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~80% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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