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Abyss Web Server Long Request Heap Overflow Vulnerability
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Secunia Advisory:
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SA9160
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Release Date:
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2003-07-02
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Popularity:
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6,176 views
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Critical:
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Highly critical
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Impact:
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DoS
System access
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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: | Abyss Web Server 1.x
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Description:
A vulnerability has been reported in Abyss Web Server, which potentially can be exploited by malicious people to compromise a vulnerable web server.
The vulnerability is caused due to a boundary error when handling HTTP requests. This can be exploited by sending an overly long, specially crafted request, which can cause a heap overflow and allow arbitrary code execution with the privileges of the web service.
Example:
GET /AAAA...[2048]...AAAA:\ HTTP/1.0
It has futhermore been reported that it is possible to insert arbitrary headers due to an input validation error in the "Location:" header returned in a "302 Found" page. This can be exploited by including the ASCII representations "%0D" (carriage return), "%0A" (linefeed), and "%20" (space) in an URL.
The vulnerability has been reported in version 1.1.2. However, other versions may also be affected.
Solution:
Reportedly, the vulnerability has been fixed in version 1.1.6 BETA:
http://www.aprelium.com/news/abws116b1.html
Provided and/or discovered by:
Fozzy
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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.
Secunia collects, validates, and verifies all vulnerability reports issued by security research groups, vendors, and others.
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