Vulnerability Description
FreeBSD kernel 4.6 and earlier closes the file descriptors 0, 1, and 2 after they have already been assigned to /dev/null when the descriptors reference procfs or linprocfs, which could allow local users to reuse the file descriptors in a setuid or setgid program to modify critical data and gain privileges.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Freebsd | Freebsd | 4.6 |
References
- ftp://ftp.freebsd.org/pub/FreeBSD/CERT/advisories/FreeBSD-SA-02:23.stdio.asc
- http://archives.neohapsis.com/archives/vulnwatch/2002-q3/0047.htmlVendor Advisory
- http://groups.google.com/groups?hl=en&lr=&ie=UTF-8&oe=UTF-8&frame=right&th=d429c
- http://marc.info/?l=bugtraq&m=102979180524452&w=2
- ftp://ftp.freebsd.org/pub/FreeBSD/CERT/advisories/FreeBSD-SA-02:23.stdio.asc
- http://archives.neohapsis.com/archives/vulnwatch/2002-q3/0047.htmlVendor Advisory
- http://groups.google.com/groups?hl=en&lr=&ie=UTF-8&oe=UTF-8&frame=right&th=d429c
- http://marc.info/?l=bugtraq&m=102979180524452&w=2
FAQ
What is CVE-2002-0820?
CVE-2002-0820 is a vulnerability with a CVSS score of 7.2 (HIGH). FreeBSD kernel 4.6 and earlier closes the file descriptors 0, 1, and 2 after they have already been assigned to /dev/null when the descriptors reference procfs or linprocfs, which could allow local us...
How severe is CVE-2002-0820?
CVE-2002-0820 has been rated HIGH with a CVSS base score of 7.2/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2002-0820?
Check the references section above for vendor advisories and patch information. Affected products include: Freebsd Freebsd.