IBM HTTP Server AfpaCache/WebSphereNet.Data DoS Vulnerability

BID:2175

Info

IBM HTTP Server AfpaCache/WebSphereNet.Data DoS Vulnerability

Bugtraq ID: 2175
Class: Failure to Handle Exceptional Conditions
CVE:
Remote: Yes
Local: No
Published: Jan 08 2001 12:00AM
Updated: Jan 08 2001 12:00AM
Credit: Discovered and posted to Bugtraq on Jan 8, 2001 by Peter <[email protected]>.
Vulnerable: IBM Net.Commerce Hosting Server 3.1.1
IBM Net.Commerce 3.1.1
IBM Net.Commerce 3.1
- HP HP-UX 11.0
- Microsoft Windows 2000 Professional
- Microsoft Windows NT 4.0
 - Sun Solaris 2.5.1
- Sun Solaris 8_sparc
 - Sun Solaris 7.0
 - Sun Solaris 2.6
 IBM Net.Commerce 3.0
IBM Net.Commerce 2.0
IBM HTTP Server 1.3.12 .2
- Caldera OpenLinux 2.4
- Caldera OpenLinux 2.3
- HP HP-UX 11.0
- IBM AIX 4.3.3
- Microsoft Windows NT 4.0
 - Redhat Linux 6.2 sparc
 - Sun Solaris 2.6
 - Turbolinux Turbolinux 6.0
IBM HTTP Server 1.3.6 .4 win32
Not Vulnerable:

Discussion

IBM HTTP Server AfpaCache/WebSphereNet.Data DoS Vulnerability

IBM HTTP Server contains AfpaCache directive which turns the Fast Response Cache Accelerator function on or off. WebSphere is a series of applications which are built upon IBM HTTP Server.

Both IBM HTTP Server and Websphere are subject to a denial of service. This is caused by exhausting computer resources with malformed HTTP GET requests. A restart of the service is required inorder to gain normal functionality.

Exploit / POC

IBM HTTP Server AfpaCache/WebSphereNet.Data DoS Vulnerability

The following example has been provided by Peter <[email protected]>:

GET / HTTP/1.0\r\nuser-agent: 20000xnull\r\n\r\n

This request must be made multiple times before the system will freeze.

Solution / Fix

IBM HTTP Server AfpaCache/WebSphereNet.Data DoS Vulnerability


IBM HTTP Server 1.3.12 .2

IBM Net.Commerce 2.0

IBM Net.Commerce 3.0

IBM Net.Commerce 3.1

IBM Net.Commerce 3.1.1

IBM Net.Commerce Hosting Server 3.1.1
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