2580.txt

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Rule:

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Sid:
2580

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Summary:
This event is generated when an attempt is made to exploit a heap overflow associated with Apache 1.3 proxy and cache module.

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Impact:
A successful attack may cause a heap overflow, permitting the execution of arbitrary code.

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Detailed Information:
When Apache 1.3 is used and the host is configured to be a web proxy, reverse proxy and/or cache server, a vulnerability exists that may allow a heap overflow and the subsequent execution of arbitrary code on the vulnerable server.  This may occur when the server receives a malformed response from a malicious web server that includes a negative content length value.  This can cause invalid memory access and a denial of service or heap overflow.

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Affected Systems:
Apache 1.3.x

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Attack Scenarios:
An attacker can entice a user to visit a malicious web server.  If a vulnerable server proxies the request and receives a malformed response, a heap overflow may occur.

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Ease of Attack:
Simple. Exploit code is publicly available.

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False Positives:
None known.

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False Negatives:
None known.

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Corrective Action:
Upgrade to the latest non-affected version of the software.

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Contributors:
Sourcefire Vulnerability Research Team
Judy Novak <[e-mail]>
Brian Caswell <[e-mail]>

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Additional References

CVE:
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0492

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