REDHAT-BUG-2242099
First published: Wed Oct 04 2023(Updated: )
When an AJP request is sent that exceeds the max-header-size attribute in ajp-listener, JBoss EAP is marked as an error state by mod_cluster in httpd. The problem is that requests exceeding the max-header-size cause JBoss EAP to close the TCP connection without returning an AJP response. A malicious user could exploit this behavior by repeatedly sending requests that exceed the max-header-size, it causes a denial-of-service attack. This is because mod_proxy_cluster marks JBoss instance as an error worker when the TCP connection is closed from the backend after sending the AJP request without receiving an AJP response, and stops forwarding.
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Red Hat JBoss Enterprise Application Platform |
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Reference Links
Frequently Asked Questions
What is the severity of REDHAT-BUG-2242099?
The severity of REDHAT-BUG-2242099 is classified as high due to the potential for service disruption and denial of service.
How do I fix REDHAT-BUG-2242099?
To fix REDHAT-BUG-2242099, increase the max-header-size attribute in the ajp-listener configuration to accommodate larger requests.
What causes the issue in REDHAT-BUG-2242099?
The issue in REDHAT-BUG-2242099 is caused by AJP requests exceeding the configured max-header-size, which leads to JBoss EAP closing the TCP connection.
Is REDHAT-BUG-2242099 exploitable?
Yes, REDHAT-BUG-2242099 is exploitable as it may allow attackers to disrupt services by sending oversized AJP requests.
Which software versions are affected by REDHAT-BUG-2242099?
REDHAT-BUG-2242099 affects Red Hat JBoss EAP across multiple versions that utilize the misconfigured ajp-listener.
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