CVE-2013-1858

The clone system-call implementation in the Linux kernel before 3.8.3 does not properly handle a combination of the CLONE_NEWUSER and CLONE_FS flags, which allows local users to gain privileges by calling chroot and leveraging the sharing of the / directory between a parent process and a child process.

🔗 References (12)

• secalert@redhathttp://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=e66eded8309ebf679d3d3c1f5820d1f2ca332c71
• secalert@redhathttp://stealth.openwall.net/xSports/clown-newuser.c
• secalert@redhathttp://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.8.3
• secalert@redhathttp://www.openwall.com/lists/oss-security/2013/03/14/6
• secalert@redhathttps://bugzilla.redhat.com/show_bug.cgi?id=921448
• secalert@redhathttps://github.com/torvalds/linux/commit/e66eded8309ebf679d3d3c1f5820d1f2ca332c71
• af854a3a-2127-422b-91ae-364da2661108http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=e66eded8309ebf679d3d3c1f5820d1f2ca332c71
• af854a3a-2127-422b-91ae-364da2661108http://stealth.openwall.net/xSports/clown-newuser.c
• af854a3a-2127-422b-91ae-364da2661108http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.8.3
• af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2013/03/14/6
• af854a3a-2127-422b-91ae-364da2661108https://bugzilla.redhat.com/show_bug.cgi?id=921448
• af854a3a-2127-422b-91ae-364da2661108https://github.com/torvalds/linux/commit/e66eded8309ebf679d3d3c1f5820d1f2ca332c71