Vulnerability Description
The cap_bprm_set_creds function in security/commoncap.c in the Linux kernel before 3.3.3 does not properly handle the use of file system capabilities (aka fcaps) for implementing a privileged executable file, which allows local users to bypass intended personality restrictions via a crafted application, as demonstrated by an attack that uses a parent process to disable ASLR.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | < 3.0.29 |
Related Weaknesses (CWE)
References
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=Broken Link
- http://rhn.redhat.com/errata/RHSA-2012-0670.htmlThird Party AdvisoryVDB Entry
- http://rhn.redhat.com/errata/RHSA-2012-0743.htmlThird Party AdvisoryVDB Entry
- http://www.debian.org/security/2012/dsa-2469Third Party Advisory
- http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.3.3Vendor Advisory
- http://www.openwall.com/lists/oss-security/2012/04/20/6Mailing ListThird Party Advisory
- http://www.securityfocus.com/bid/53166Third Party AdvisoryVDB Entry
- http://www.securitytracker.com/id?1027072Third Party AdvisoryVDB Entry
- https://bugzilla.redhat.com/show_bug.cgi?id=806722Issue Tracking
- https://exchange.xforce.ibmcloud.com/vulnerabilities/75043VDB Entry
- https://github.com/torvalds/linux/commit/d52fc5dde171f030170a6cb78034d166b13c944Third Party Advisory
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=Broken Link
- http://rhn.redhat.com/errata/RHSA-2012-0670.htmlThird Party AdvisoryVDB Entry
- http://rhn.redhat.com/errata/RHSA-2012-0743.htmlThird Party AdvisoryVDB Entry
- http://www.debian.org/security/2012/dsa-2469Third Party Advisory
FAQ
What is CVE-2012-2123?
CVE-2012-2123 is a vulnerability with a CVSS score of 7.2 (HIGH). The cap_bprm_set_creds function in security/commoncap.c in the Linux kernel before 3.3.3 does not properly handle the use of file system capabilities (aka fcaps) for implementing a privileged executab...
How severe is CVE-2012-2123?
CVE-2012-2123 has been rated HIGH with a CVSS base score of 7.2/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2012-2123?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.