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GoAhead WebServer Denial of Service Vulnerability
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Secunia Advisory:
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SA10678
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Release Date:
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2004-01-20
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Critical:
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Moderately critical
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Impact:
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Exposure of sensitive information
DoS
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Where:
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From remote
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Solution Status:
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Unpatched
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| Software: | GoAhead WebServer 2.x
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This advisory is currently marked as unpatched!
- Companies can be alerted when a patch is released! |
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Description:
Luigi Auriemma has reported a vulnerability in GoAhead WebServer, allowing malicious people to cause a Denial of Service.
The server fails to handle certain invalid HTTP POST requests where the value specified in the "Content-Length" header is larger than the actual amount of data. This causes the server process to enter an infinite loop consuming 100% CPU resources.
It is possible to view the source code of files by issuing a request where the slashes are replaced by "\", "%5c", or combinations hereof. This can be exploited to see the source of executable files in "cgi-bin", and it may also be possible to gain access to files in restricted folders.
The vulnerabilities have been reported in version 2.1.8 and prior.
Solution:
Use another product, or use a firewall or proxy server with filtering capabilities to block invalid requests.
Provided and/or discovered by:
Luigi Auriemma
Original Advisory:
http://aluigi.altervista.org/adv/goahead-adv1.txt
http://aluigi.altervista.org/adv/goahead-adv2.txt
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Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.
Secunia collects, validates, and verifies all vulnerability reports issued by security research groups, vendors, and others.
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1 Related Secunia Security Advisories
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1. GoAhead WebServer Script Source Code Disclosure Vulnerability
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