Description (CNA)
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.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| n/a / n/a | affected n/a |
CWE
No CWE identifiers supplied.
References
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=e66eded8309ebf679d3d3c1f5820d1f2ca332c71
- http://www.openwall.com/lists/oss-security/2013/03/14/6
- http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.8.3
- http://stealth.openwall.net/xSports/clown-newuser.c
- https://github.com/torvalds/linux/commit/e66eded8309ebf679d3d3c1f5820d1f2ca332c71
- https://bugzilla.redhat.com/show_bug.cgi?id=921448
ADP enrichment
No English description supplied.
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=e66eded8309ebf679d3d3c1f5820d1f2ca332c71
- http://www.openwall.com/lists/oss-security/2013/03/14/6
- http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.8.3
- http://stealth.openwall.net/xSports/clown-newuser.c
- https://github.com/torvalds/linux/commit/e66eded8309ebf679d3d3c1f5820d1f2ca332c71
- https://bugzilla.redhat.com/show_bug.cgi?id=921448