CVE-2014-5207 Privilege escalation in n/a
Local attackers can exploit improper mount flag restrictions in the Linux kernel to gain privileges or cause denial of service.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2014-5207?
CVE-2014-5207 is a medium-severity vulnerability in Canonical Ubuntu Linux, published on 18 Aug 2014. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
fs/namespace.c in the Linux kernel through 3.16.1 does not properly restrict clearing MNT_NODEV, MNT_NOSUID, and MNT_NOEXEC and changing MNT_ATIME_MASK during a remount of a bind mount, which allows local users to gain privileges, interfere with backups and auditing on systems that had atime enabled, or cause a denial of service (excessive filesystem updating) on systems that had atime disabled via a "mount -o remount" command within a user namespace.
Weakness: CWE-269
Which versions are affected by CVE-2014-5207?
It affects 2 products.
Products include Canonical Ubuntu Linux, Linux kernel.
How do I fix CVE-2014-5207?
Apply the vendor's patch.
Is CVE-2014-5207 being exploited?
There is no known exploitation of CVE-2014-5207 in the wild and no public exploit code.
Public exploit code: 1 Exploit-DB entry.
Other vulnerabilities in Canonical Ubuntu Linux
Sources
Also known as DEBIAN-CVE-2014-5207, GHSA-gv3p-vh66-pccp, UBUNTU-CVE-2014-5207.