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.
Platforms Affected:
- NetProxy, NetProxy 4.03
Remedy:
No remedy available as of August 30, 2008.
Consequences:
Bypass Security
References:
- NetProxy Web site, NetProxy at http://www.grok.co.uk/netproxy/index.html.
- 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.
- FrSIRT/ADV-2007-0779: Grok Developments NetProxy URL Handling Access Restrictions Bypass Vulnerability
Reported:
Feb 27, 2007
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