procfs in FreeBSD and possibly other operating systems does not properly restrict access to per-process mem and ctl files, which allows local users to gain root privileges by forking a child process and executing a privileged process from the child, while the parent retains access to the childs address space.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Freebsd | Freebsd | 3.5.1 (including) | 3.5.1 (including) |
| Freebsd | Freebsd | 4.1 (including) | 4.1 (including) |
| Freebsd | Freebsd | 4.1.1 (including) | 4.1.1 (including) |
| Freebsd | Freebsd | 4.2 (including) | 4.2 (including) |
References
- ftp://ftp.FreeBSD.org/pub/FreeBSD/CERT/advisories/FreeBSD-SA-00:77.procfs.v1.1.asc
- http://www.osvdb.org/1697
- http://www.securityfocus.com/bid/2130
- https://exchange.xforce.ibmcloud.com/vulnerabilities/6106
- ftp://ftp.FreeBSD.org/pub/FreeBSD/CERT/advisories/FreeBSD-SA-00:77.procfs.v1.1.asc
- http://www.osvdb.org/1697
- http://www.securityfocus.com/bid/2130
- https://exchange.xforce.ibmcloud.com/vulnerabilities/6106