full-disclosure - Unchecked Buffer in Jana Web Server

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From: mattmurphy at kc.rr.com (Matthew Murphy)
Subject: Unchecked Buffer in Jana Web Server

Security Advisory: Unchecked Buffer in Jana Web Server

    Jana Web Server has been the focus of several recent discoveries,
including several buffer overrun vulnerabilities.  Yet another exploitable
overflow exists in the Jana Web Server.

    Jana Web Server does not properly check the size of the HTTP
request method input by the user before storing it, resulting in a stack
overflow.

    If the method sufficiently exceeds the allocated storage, EIP will be
overwritten.

Example:

[buffer] / HTTP/1.0

The buffer can't contain any of the following chars:

0x00 - duh
0x0D - CR
0x0A - LF (both end our request line)
0x20 - space; this terminates the method portion

Exploitability is still in testing.

"The reason the mainstream is thought
of as a stream is because it is
so shallow."
                     - Author Unknown
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