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TITLE:
Yaws Source Code Disclosure Vulnerability

SECUNIA ADVISORY ID:
SA15740

VERIFY ADVISORY:
http://secunia.com/advisories/15740/

CRITICAL:
Moderately critical

IMPACT:
Exposure of sensitive information

WHERE:
>From remote

SOFTWARE:
Yaws 1.x
http://secunia.com/product/5254/

DESCRIPTION:
M. Eiszner has reported a vulnerability in Yaws, which can be
exploited by malicious people to gain knowledge of potentially
sensitive information.

This vulnerability is caused due to an input validation error when
handling a request containing a NULL byte appended to the filename.
This can be exploited to retrieve the source code of yaws script
files (.yaws) on a vulnerable server.

The vulnerability is reported in version 1.55 and prior.

SOLUTION:
Update to version 1.56:
http://yaws.hyber.org/yaws-1.55_to_1.56.patch

PROVIDED AND/OR DISCOVERED BY:
M. Eiszner, SEC-Consult.

ORIGINAL ADVISORY:
SEC Consult:
http://www.sec-consult.com/181.html

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About:
This Advisory was delivered by Secunia as a free service to help
everybody keeping their systems up to date against the latest
vulnerabilities.

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Please Note:
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