CVE - CVE-2014-5206

CVE-ID
CVE-2014-5206	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
Description
The do_remount function in fs/namespace.c in the Linux kernel through 3.16.1 does not maintain the MNT_LOCK_READONLY bit across a remount of a bind mount, which allows local users to bypass an intended read-only restriction and defeat certain sandbox protection mechanisms via a "mount -o remount" command within a user namespace.
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MLIST:[oss-security] 20140813 Re: CVE Request: ro bind mount bypass using user namespaces URL:http://www.openwall.com/lists/oss-security/2014/08/13/4 CONFIRM:http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=a6138db815df5ee542d848318e5dae681590fccd CONFIRM:https://bugzilla.redhat.com/show_bug.cgi?id=1129662 CONFIRM:https://github.com/torvalds/linux/commit/a6138db815df5ee542d848318e5dae681590fccd UBUNTU:USN-2317-1 URL:http://www.ubuntu.com/usn/USN-2317-1 UBUNTU:USN-2318-1 URL:http://www.ubuntu.com/usn/USN-2318-1 BID:69214 URL:http://www.securityfocus.com/bid/69214
Assigning CNA
N/A
Date Entry Created
20140813	Disclaimer: The entry creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20140813)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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