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CERT Coordination Center

Apache HTTP Server contains a buffer overflow in the mod_proxy module

Vulnerability Note VU#541310

Original Release Date: 2004-10-19 | Last Revised: 2004-10-19

Overview

Apache Web Server contains a buffer overflow vulnerability in the mod_proxy module that may allow a remote attacker to execute arbitrary code or launch a denial of service (DoS) attack.

Description

The Apache Server is an open-source web server offered by The Apache Software Foundation. The Apache Server uses the mod_proxy module to implement proxying for various common protocols such as FTP and HTTP. In versions of Apache prior to and including 1.3.31-r2, the mod_proxy module contains a buffer overflow vulnerability located in the file proxy_util.c. To exploit this vulnerability an attacker must persuade an Apache server with mod_proxy enabled to connect to a malicious server configured to return an invalid content-length header.

Impact

A remote attacker may be able to execute arbitrary code with the privileges of an Apache child process. Exploitation of this vulnerability may completely disable the Apache

server resulting in a denial-of-service condition.

Solution

Upgrade Apache

Apache states this issue was fixed in Apache httpd 1.3.32-dev.

Vendor Information

541310
 

Apache Affected

Updated:  August 20, 2004

Status

Affected

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Addendum

The CERT/CC has no additional comments at this time.

If you have feedback, comments, or additional information about this vulnerability, please send us email.


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References

Acknowledgements

This vulnerability was reported by Georgi Guninski.

This document was written by Jeff Gennari.

Other Information

CVE IDs: CVE-2004-0492
Severity Metric: 4.02
Date Public: 2004-06-10
Date First Published: 2004-10-19
Date Last Updated: 2004-10-19 17:55 UTC
Document Revision: 108

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