NetProxy URL filtering bypass

netproxy-url-filtering-bypass (32697)

Medium Risk

Description:

NetProxy could allow a malicious user to bypass URL filtering to view restricted or malicious Web content. By sending a specially-crafted GET request to the proxy server and omitting "http://" from the URL, a user could bypass URL content logging and filtering and possibly view unauthorized Web content.

*CVSS:

Base Score:	7
Access Vector:	Remote
Access Complexity:	Low
Authentication:	Not Required
Confidentiality Impact:	Partial
Integrity Impact:	Partial
Availability Impact:	Partial
Temporal Score:	6
Exploitability:	Proof-Of-Concept
Remediation Level:	Unavailable
Report Confidence:	Uncorroborated

Consequences:

Bypass Security

Remedy:

No remedy available as of July 9, 2011.

References:

• NetProxy Web site: NetProxy.
• BID-22741: NetProxy Security Restriction Bypass Vulnerability
• CVE-2007-1224: Grok Developments NetProxy 4.03 allows remote attackers to bypass URL filtering via a request that omits http:// from the URL and specifies the destination port (:80).
• CVE-2007-1225: The connection log file implementation in Grok Developments NetProxy 4.03 does not record requests that omit http:// in a URL, which might allow remote attackers to conduct unauthorized activities and avoid detection.
• VUPEN/ADV-2007-0779: Grok Developments NetProxy URL Handling Access Restrictions Bypass Vulnerability

Platforms Affected:

• NetProxy NetProxy 4.03

Reported:

Feb 27, 2007

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The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall IBM be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.

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