Advisory Details

April 13th, 2010

Sun Microsystems Directory Server DSML-over-HTTP Username Search Denial of Service Vulnerability

ZDI-10-073
ZDI-CAN-594

CVE ID CVE-2010-0897
CVSS SCORE 7.8, (AV:N/AC:L/Au:N/C:N/I:N/A:C)
AFFECTED VENDORS Sun Microsystems
AFFECTED PRODUCTS Directory Server
TREND MICRO CUSTOMER PROTECTION Trend Micro TippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID 9402. For further product information on the TippingPoint IPS: http://www.tippingpoint.com
VULNERABILITY DETAILS

This vulnerability allows attackers to deny services on vulnerable installations of Sun Microsystems Directory Service Manager. Authentication is not required to exploit this vulnerability.

The specific flaw exists within Sun Directory Server's DSML-over-HTTP implementation and can be triggered via an HTTP POST request to the webserver that the application has bound to. When the service processes a search request with a malformed username, the application will dereference a null pointer causing any future queries made against the webserver to fail. This will lead to a denial of service against the affected service.

ADDITIONAL DETAILS Sun Microsystems has issued an update to correct this vulnerability. More details can be found at:
http://www.oracle.com/technology/deploy/security/critical-patch-updates/cpuapr2010.html
DISCLOSURE TIMELINE
  • 2009-10-27 - Vulnerability reported to vendor
  • 2010-04-13 - Coordinated public release of advisory
CREDIT Anonymous
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