CVE-2014-5207 Privilege escalation in n/a

Medium 6.2 Published Updated

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.

All Canonical Ubuntu Linux vulnerabilities

Sources

Also known as DEBIAN-CVE-2014-5207, GHSA-gv3p-vh66-pccp, UBUNTU-CVE-2014-5207.

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