Title: IBM HTTP Server AfpaCache/WebSphereNet.Data DoS Vulnerability
Severity: MODERATE
Description:
IBM HTTP Server contains AfpaCache directive which turns the Fast Response Cache Accelerator function on or off.
Both IBM HTTP Server and Websphere are subject to a denial of service.
Requesting multiple malformed HTTP GET requests will cause the consumption of kernel memory and eventually lead to a denial of service. This condition is due to the AfpaCache module not releasing allocated memory after "Bad Request" HTTP requests.
For WebSphere this condition occurs when a non-existent macro is requested, forcing the system to go into an infinite loop trying to find the path to the macro until computer resources are eventually exhausted. A restart of the service is required inorder to gain normal functionality.
If this vulnerability is exploited, it will result in services to the webserver being denied.
Affected Products:
- IBM HTTP Server 1.3.12.2
- IBM HTTP Server 1.3.6.4 win32
- IBM Net.Commerce 2.0.0
- IBM Net.Commerce 3.0.0
- IBM Net.Commerce 3.1.0
- IBM Net.Commerce 3.1.1
- IBM Net.Commerce Hosting Server 3.1.1
References:
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