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TITLE:
Internet Junkbuster URL Filtering Vulnerabilities

SECUNIA ADVISORY ID:
SA14932

VERIFY ADVISORY:
http://secunia.com/advisories/14932/

CRITICAL:
Moderately critical

IMPACT:
Manipulation of data, DoS, System access

WHERE:
>From remote

SOFTWARE:
Internet Junkbuster 2.x
http://secunia.com/product/919/

DESCRIPTION:
Two vulnerabilities have been reported in Internet Junkbuster, which
can be exploited by malicious people to manipulate certain
information, cause a DoS (Denial of Service) and potentially
compromise a vulnerable system.

1) An error in the "ij_untrusted_url()" function can be exploited to
modify the referrer settings by tricking a user into opening a
specially crafted URL through the proxy.

Example:
http://[host]?a?a?[REFERRER]

Successful exploitation requires that the proxy is configured in
single threaded mode (not default setting).

2) Some errors in the filtering of URLs can be exploited to corrupt
the heap and crash a vulnerable proxy.

This may also be exploited to execute arbitrary code.

SOLUTION:
Use another product.

PROVIDED AND/OR DISCOVERED BY:
1) James Ranson
2) Tavis Ormandy, Gentoo Linux Security Audit Team

ORIGINAL ADVISORY:
http://www.gentoo.org/security/en/glsa/glsa-200504-11.xml

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About:
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