CVE-2002-0820
First published: Fri Aug 02 2002(Updated: )
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.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| FreeBSD Kernel | =4.6 |
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2002-0820?
CVE-2002-0820 is considered a high severity vulnerability due to its potential to allow local users to gain elevated privileges.
How do I fix CVE-2002-0820?
To fix CVE-2002-0820, upgrade to a FreeBSD version later than 4.6, which does not have this vulnerability.
Who is affected by CVE-2002-0820?
CVE-2002-0820 affects FreeBSD versions 4.6 and earlier, where local users can exploit the issue.
What can attackers do with CVE-2002-0820?
Attackers can reuse file descriptors in setuid or setgid programs to modify critical data and gain unauthorized access.
When was CVE-2002-0820 disclosed?
CVE-2002-0820 was disclosed in 2002 and is part of an older FreeBSD kernel vulnerability.
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