CVE-2013-1959 Information

Description

kernel/user_namespace.c in the Linux kernel before 3.8.9 does not have appropriate capability requirements for the uid_map and gid_map files which allows local users to gain privileges by opening a file within an unprivileged process and then modifying the file within a privileged process.

Reference

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=6708075f104c3c9b04b23336bb0366ca30c3931b http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=e3211c120a85b792978bcb4be7b2886df18d27f0 http://www.exploit-db.com/exploits/25307 http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.8.9 http://www.openwall.com/lists/oss-security/2013/04/29/1 https://github.com/torvalds/linux/commit/6708075f104c3c9b04b23336bb0366ca30c3931b https://github.com/torvalds/linux/commit/e3211c120a85b792978bcb4be7b2886df18d27f0