CVE-2002-0820 Privilege escalation in n/a
Local attackers can exploit file descriptor handling in FreeBSD kernel to gain privileges via setuid programs.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2002-0820?
CVE-2002-0820 is a high-severity vulnerability in Freebsd Freebsd, published on 2 Aug 2002. It can only be exploited from the same machine or local network, with no action from the victim.
Official 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.
Which versions are affected by CVE-2002-0820?
It affects 1 product.
Products include Freebsd Freebsd.
How do I fix CVE-2002-0820?
No fix has been published for CVE-2002-0820 yet. Limit exposure of the affected software until one is available.
Is CVE-2002-0820 being exploited?
There is no known exploitation of CVE-2002-0820 in the wild and no public exploit code.
Other vulnerabilities in Freebsd Freebsd
Sources
Also known as GHSA-xpcm-qv2j-fxfr.