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Abyss Web Server Long Request Heap Overflow Vulnerability
Secunia Advisory: SA9160
Release Date: 2003-07-02
Popularity: 6,879 views

Critical:
Highly critical
Impact: DoS
System access
Where: From remote
Solution Status: Vendor Patch

Software:Abyss Web Server 1.x

Secunia CVSS-2 Score: Available in Secunia business solutions

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Advisory Content (Page 1 of 3)[ 1 ] [ 2 ] [ 3 ]

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.

Change Page:
[ 1 ] [ 2 ] [ 3 ]



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