CVE-2002-0820

Severity

72%

Complexity

39%

Confidentiality

165%

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.

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 2.0 Base Score 7.2. CVSS Attack Vector: local. CVSS Attack Complexity: low. CVSS Vector: (AV:L/AC:L/Au:N/C:C/I:C/A:C).

Overview

First reported 22 years ago

2002-08-12 04:00:00

Last updated 8 years ago

2016-10-18 02:22:00

Affected Software

FreeBSD 4.6

4.6

References

FreeBSD-SA-02:23

20020731 [VulnWatch] FreeBSD <=4.6 kernel problems, yet Linux and *BSD much better than Windows

Vendor Advisory

http://groups.google.com/groups?hl=en&lr=&ie=UTF-8&oe=UTF-8&frame=right&th=d429cd2ef1d3a2b7&seekm=ai6c0q%242289%241%40FreeBSD.csie.NCTU.edu.tw#link16

20020819 Freebsd FD exploit

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