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Apache mod_proxy "date" Denial of Service Vulnerability
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Secunia Advisory:
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SA26636
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Release Date:
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2007-08-30
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Last Update:
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2007-09-10
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Popularity:
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13,953 views
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Critical:
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Less critical
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Impact:
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DoS
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Where:
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From remote
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Solution Status:
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Vendor Patch
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| Software: | Apache 2.0.x
Apache 2.2.x
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| CVE reference: | CVE-2007-3847
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Description:
A vulnerability has been reported in the Apache mod_proxy module, which can be exploited by malicious people to cause a DoS (Denial of Service).
The vulnerability is caused due to the improper handling of date headers within the "ap_proxy_date_canon()" function in proxy_util.c. This can be exploited to cause a DoS by sending specially crafted requests to the affected server.
Successful exploitation results in a crash if a threaded Multi-Processing Module is used on servers where a reverse or forward proxy is configured.
The vulnerability is reported in Apache 2.0.x versions 2.0.59 and prior, and Apache 2.2.x versions 2.2.4 and prior.
Solution:
Update to Apache 2.0.61 or Apache 2.2.6.
http://httpd.apache.org/download.cgi
Provided and/or discovered by:
Reported by the vendor.
Changelog:
2007-09-10: Updated "Solution" section.
Original Advisory:
http://httpd.apache.org/security/vulnerabilities_20.html
http://httpd.apache.org/security/vulnerabilities_22.html
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About this Secunia Advisory
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Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.
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