Vulnerability 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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 2.6.39, < 3.0.18 |
Related Weaknesses (CWE)
References
- http://blog.zx2c4.com/749Third Party Advisory
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commitdiff%Vendor Advisory
- http://secunia.com/advisories/47708Broken Link
- http://ubuntu.com/usn/usn-1336-1Third Party Advisory
- http://www.kb.cert.org/vuls/id/470151Third Party AdvisoryUS Government Resource
- http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.2.2Vendor Advisory
- http://www.openwall.com/lists/oss-security/2012/01/18/1Mailing ListThird Party Advisory
- http://www.openwall.com/lists/oss-security/2012/01/18/2Mailing ListThird Party Advisory
- http://www.openwall.com/lists/oss-security/2012/01/19/4Mailing ListThird Party Advisory
- http://www.openwall.com/lists/oss-security/2012/01/22/4Mailing ListThird Party Advisory
- http://www.redhat.com/support/errata/RHSA-2012-0052.htmlThird Party Advisory
- http://www.redhat.com/support/errata/RHSA-2012-0061.htmlThird Party Advisory
- http://www.securityfocus.com/bid/51625Third Party AdvisoryVDB Entry
- https://bugzilla.redhat.com/show_bug.cgi?id=782642Issue TrackingThird Party Advisory
- http://blog.zx2c4.com/749Third Party Advisory
FAQ
What is CVE-2012-0056?
CVE-2012-0056 is a vulnerability with a CVSS score of 6.9 (MEDIUM). 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 modi...
How severe is CVE-2012-0056?
CVE-2012-0056 has been rated MEDIUM with a CVSS base score of 6.9/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2012-0056?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.