Vigil@nce - Linux kernel: privilege escalation via inode_capable
June 2014 by Vigil@nce
This bulletin was written by Vigil@nce : http://vigilance.fr/offer
SYNTHESIS OF THE VULNERABILITY
A local attacker can manipulate files on Linux, in order to
escalate his privileges.
– Impacted products: Fedora, Linux
– Severity: 2/4
– Creation date: 11/06/2014
– Revision date: 18/06/2014
DESCRIPTION OF THE VULNERABILITY
An inode is used to identify a file.
However, the inode_capable() function does not perform the
expected checks on the file group in a namespace.
A local attacker can therefore manipulate files on Linux, in order
to escalate his privileges.
ACCESS TO THE COMPLETE VIGIL@NCE BULLETIN
http://vigilance.fr/vulnerability/Linux-kernel-privilege-escalation-via-inode-capable-14880