Blue Coat K9 Web Protection Multiple Buffer Overflow Vulnerabilities - Secunia Advisories - Vulnerability Information

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Blue Coat K9 Web Protection Multiple Buffer Overflow Vulnerabilities

Secunia Advisory:

SA25813

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Release Date:

2008-07-31

Last Update:

2009-05-21

Popularity:

8,124 views

Critical:

Highly critical

Impact:

System access

Where:

From remote

Solution Status:

Unpatched

Software:

Blue Coat K9 Web Protection 3.x

Binary Analysis:

BA161 :: Available for 1 Credit

BA166 :: Available for 1 Credit

Secunia CVSS-2 Score:

Available in Secunia business solutions

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Advisory Content (Page 1 of 3)

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Description:
Secunia Research has discovered some vulnerabilities in K9 Web Protection, which can be exploited by malicious people to compromise a user's system.

1) A boundary error in the filter service (k9filter.exe) when handling "Referer:" headers during access to the web-based K9 Web Protection Administration interface can be exploited to cause a stack-based buffer overflow via an overly long "Referer:" header.

Successful exploitation allows execution of arbitrary code when a user e.g. visits a malicious web site.

2) Two boundary errors in the filter service (k9filter.exe) when handling HTTP version information in responses from a centralised server (sp.cwfservice.net) can be exploited to cause stack-based buffer overflows via a specially crafted response containing overly long HTTP version information.

Successful exploitation allows execution of arbitrary code, but requires that the request is intercepted via e.g. DNS poisoning or Man-in-the-Middle attacks.

The vulnerabilities are confirmed in version 3.2.44 with Filter version 3.2.32. Other versions may also be affected.

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

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