## Description

The IOS HTTP service in Cisco routers and switches running IOS 11.1 through 12.1 allows remote attackers to cause a denial of service by requesting a URL that contains a %% string.

## Severity

Overall Severity: N/A

### CVSS Metrics

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

## Affected Products

### cisco - ios

Affected Versions:

- 11.1

### cisco - ios

Affected Versions:

- 11.2

### cisco - ios

Affected Versions:

- 11.2\(4\)f1

### cisco - ios

Affected Versions:

- 11.2\(8\)

### cisco - ios

Affected Versions:

- 11.2\(8\)p

### cisco - ios

Affected Versions:

- 11.2\(9\)p

### cisco - ios

Affected Versions:

- 11.2\(9\)xa

### cisco - ios

Affected Versions:

- 11.2\(10\)

### cisco - ios

Affected Versions:

- 11.2\(10\)bc

### cisco - ios

Affected Versions:

- 11.2\(17\)

### cisco - ios

Affected Versions:

- 11.2p

### cisco - ios

Affected Versions:

- 11.3

### cisco - ios

Affected Versions:

- 11.3\(1\)

### cisco - ios

Affected Versions:

- 11.3\(1\)ed

### cisco - ios

Affected Versions:

- 11.3\(1\)t

### cisco - ios

Affected Versions:

- 11.3t

### cisco - ios

Affected Versions:

- 12.0

### cisco - ios

Affected Versions:

- 12.0\(1\)w

### cisco - ios

Affected Versions:

- 12.0\(1\)xa3

### cisco - ios

Affected Versions:

- 12.0\(1\)xb

### cisco - ios

Affected Versions:

- 12.0\(1\)xe

### cisco - ios

Affected Versions:

- 12.0\(2\)

### cisco - ios

Affected Versions:

- 12.0\(2\)xc

### cisco - ios

Affected Versions:

- 12.0\(2\)xd

### cisco - ios

Affected Versions:

- 12.0\(2\)xf

### cisco - ios

Affected Versions:

- 12.0\(2\)xg

### cisco - ios

Affected Versions:

- 12.0\(3\)t2

### cisco - ios

Affected Versions:

- 12.0\(4\)

### cisco - ios

Affected Versions:

- 12.0\(4\)s

### cisco - ios

Affected Versions:

- 12.0\(4\)t

### cisco - ios

Affected Versions:

- 12.0\(5\)

### cisco - ios

Affected Versions:

- 12.0\(5\)t1

### cisco - ios

Affected Versions:

- 12.0\(6\)

### cisco - ios

Affected Versions:

- 12.0\(7\)t

### cisco - ios

Affected Versions:

- 12.0\(8\)

### cisco - ios

Affected Versions:

- 12.0\(9\)s

### cisco - ios

Affected Versions:

- 12.0db

### cisco - ios

Affected Versions:

- 12.0s

### cisco - ios

Affected Versions:

- 12.0t

## References

- http://archives.neohapsis.com/archives/bugtraq/2000-04/0261.html
- http://www.cisco.com/warp/public/707/ioshttpserver-pub.shtml
- http://www.osvdb.org/1302
- http://www.securityfocus.com/bid/1154
- http://archives.neohapsis.com/archives/bugtraq/2000-04/0261.html
- http://www.cisco.com/warp/public/707/ioshttpserver-pub.shtml
- http://www.osvdb.org/1302
- http://www.securityfocus.com/bid/1154

Neural Processor Active