Vulnerability Description
The clone_mnt function in fs/namespace.c in the Linux kernel before 3.8.6 does not properly restrict changes to the MNT_READONLY flag, which allows local users to bypass an intended read-only property of a filesystem by leveraging a separate mount namespace.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | <= 3.8.5 |
Related Weaknesses (CWE)
References
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=
- http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.8.6
- http://www.openwall.com/lists/oss-security/2013/04/16/11
- https://github.com/torvalds/linux/commit/132c94e31b8bca8ea921f9f96a57d684fa4ae0a
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=
- http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.8.6
- http://www.openwall.com/lists/oss-security/2013/04/16/11
- https://github.com/torvalds/linux/commit/132c94e31b8bca8ea921f9f96a57d684fa4ae0a
FAQ
What is CVE-2013-1957?
CVE-2013-1957 is a vulnerability with a CVSS score of 4.7 (MEDIUM). The clone_mnt function in fs/namespace.c in the Linux kernel before 3.8.6 does not properly restrict changes to the MNT_READONLY flag, which allows local users to bypass an intended read-only property...
How severe is CVE-2013-1957?
CVE-2013-1957 has been rated MEDIUM with a CVSS base score of 4.7/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2013-1957?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.