## Description

The undocumented semconfig system call in BSD freezes the state of semaphores, which allows local users to cause a denial of service of the semaphore system by using the semconfig call.

## Severity

Overall Severity: N/A

### CVSS Metrics

Type | Score | Severity | Vector
--- | --- | --- | ---

## Affected Products

### freebsd - freebsd

Affected Versions:

- 1.1.5.1

### freebsd - freebsd

Affected Versions:

- 2.0

### freebsd - freebsd

Affected Versions:

- 2.0.5

### freebsd - freebsd

Affected Versions:

- 2.1.0

### freebsd - freebsd

Affected Versions:

- 2.1.5

### freebsd - freebsd

Affected Versions:

- 2.1.6

### freebsd - freebsd

Affected Versions:

- 2.1.6.1

### freebsd - freebsd

Affected Versions:

- 2.1.7.1

### freebsd - freebsd

Affected Versions:

- 2.2

### freebsd - freebsd

Affected Versions:

- 2.2.2

### freebsd - freebsd

Affected Versions:

- 2.2.3

### freebsd - freebsd

Affected Versions:

- 2.2.4

### freebsd - freebsd

Affected Versions:

- 2.2.5

### freebsd - freebsd

Affected Versions:

- 2.2.6

### freebsd - freebsd

Affected Versions:

- 2.2.8

### freebsd - freebsd

Affected Versions:

- 3.0

### freebsd - freebsd

Affected Versions:

- 3.1

### freebsd - freebsd

Affected Versions:

- 3.2

### freebsd - freebsd

Affected Versions:

- 3.3

### freebsd - freebsd

Affected Versions:

- 3.4

### freebsd - freebsd

Affected Versions:

- 4.0

### freebsd - freebsd

Affected Versions:

- 4.0

### freebsd - freebsd

Affected Versions:

- 5.0

### freebsd - freebsd

Affected Versions:

- 5.0

### netbsd - netbsd

Affected Versions:

- 1.4.1

### netbsd - netbsd

Affected Versions:

- 1.4.1

### netbsd - netbsd

Affected Versions:

- 1.4.1

### netbsd - netbsd

Affected Versions:

- 1.4.2

### netbsd - netbsd

Affected Versions:

- 1.4.2

### netbsd - netbsd

Affected Versions:

- 1.4.2

### netbsd - netbsd

Affected Versions:

- 1.4.2

## References

- ftp://ftp.freebsd.org/pub/FreeBSD/CERT/advisories/FreeBSD-SA-00:19.semconfig.asc
- ftp://ftp.netbsd.org/pub/NetBSD/misc/security/advisories/NetBSD-SA2000-004.txt.asc
- http://www.openbsd.org/errata26.html#semconfig
- http://www.securityfocus.com/bid/1270
- ftp://ftp.freebsd.org/pub/FreeBSD/CERT/advisories/FreeBSD-SA-00:19.semconfig.asc
- ftp://ftp.netbsd.org/pub/NetBSD/misc/security/advisories/NetBSD-SA2000-004.txt.asc
- http://www.openbsd.org/errata26.html#semconfig
- http://www.securityfocus.com/bid/1270

Neural Processor Active