Vulnerability Description
The btrfs_xattr_set_acl function in fs/btrfs/acl.c in btrfs in the Linux kernel 2.6.34 and earlier does not check file ownership before setting an ACL, which allows local users to bypass file permissions by setting arbitrary ACLs, as demonstrated using setfacl.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | <= 2.6.34 |
Related Weaknesses (CWE)
References
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commitdiff%
- http://lkml.org/lkml/2010/5/17/544ExploitPatchThird Party Advisory
- http://www.openwall.com/lists/oss-security/2010/06/11/3Mailing ListThird Party Advisory
- http://www.openwall.com/lists/oss-security/2010/06/14/2Mailing ListThird Party Advisory
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commitdiff%
- http://lkml.org/lkml/2010/5/17/544ExploitPatchThird Party Advisory
- http://www.openwall.com/lists/oss-security/2010/06/11/3Mailing ListThird Party Advisory
- http://www.openwall.com/lists/oss-security/2010/06/14/2Mailing ListThird Party Advisory
FAQ
What is CVE-2010-2071?
CVE-2010-2071 is a vulnerability with a CVSS score of 4.6 (MEDIUM). The btrfs_xattr_set_acl function in fs/btrfs/acl.c in btrfs in the Linux kernel 2.6.34 and earlier does not check file ownership before setting an ACL, which allows local users to bypass file permissi...
How severe is CVE-2010-2071?
CVE-2010-2071 has been rated MEDIUM with a CVSS base score of 4.6/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2010-2071?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.