Multiple vendor XML/SOAP HTTP server SOAP request DTD denial of service
| xml-soap-dtd-dos (13969) |  Medium Risk |
Description:
Multiple vendor XML/SOAP HTTP servers are vulnerable to a denial of service. By sending a specially-crafted SOAP request that contains document type definitions (DTDs), a remote attacker could cause the server to consume 100% of the available CPU resources.
Platforms Affected:
- IBM, WebSphere Application Server 5.0.0
- Microsoft, .NET Framework 1.0
- Microsoft, .NET Framework 1.1
Remedy:
For IBM WebSphere:
Apply the IBM patch PQ81278, available from the IBM Web site. See References.
For Microsoft .NET Framework:
Apply the update, as listed in the Microsoft Knowledge Base Article - 826231. See References.
Consequences:
Denial of Service
References:
- BugTraq Mailing List, Thu Dec 11 2003 - 11:58:17 CST, Multiple vendor SOAP server (XML parser) denial of service (DTD parameter entities) at http://archives.neohapsis.com/archives/bugtraq/2003-12/0183.html.
- IBM Web site, Web Services Denial of Service problem with XML Attributes at http://www-1.ibm.com/support/docview.wss?rs=180&context=SSEQTP&q=PQ81278&uid=swg24005943.
- Microsoft Knowledge Base Article - 826231, Software update to prevent the processing of XML messages that contain DTDs for .NET Framework 1.1 at http://support.microsoft.com/default.aspx?kbid=826231.
- BID-9185: Multiple Vendor XML Parser SOAP Server Denial Of Service Vulnerability
- BID-9204: Multiple Vendor XML DTD Parameter Entity SOAP Server Denial Of Service Vulnerability
Reported:
Oct 11, 2003
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