Advisory Details

February 8th, 2011

Multiple Vendor Calendar Manager RPC Service Remote Code Execution Vulnerability

ZDI-11-062
ZDI-CAN-561

CVE ID CVE-2010-4435
CVSS SCORE 10, (AV:N/AC:L/Au:N/C:C/I:C/A:C)
AFFECTED VENDORS Hewlett-Packard
IBM
Sun Microsystems
AFFECTED PRODUCTS HP-UX
AIX
Solaris 10
TIPPINGPOINT™ IPS CUSTOMER PROTECTION TippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID 9267. For further product information on the TippingPoint IPS: http://www.tippingpoint.com
VULNERABILITY DETAILS

This vulnerability allows attackers to execute arbitrary code on vulnerable installations of the Calendar Manager RPC Service. Authentication is not required to exploit this vulnerability.

The specific flaw exists within the CMSD server (rpc.cmsd) which listens by default on UDP port 32768. The process does not properly handle large XDR-encoded ASCII strings to RPC call 10 followed by RPC call 6. This can be abused by an attacker to overflow a buffer on the remote host. Successful exploitation can result in arbitrary code execution.

VENDOR RESPONSE Hewlett-Packard states:


IBM states:

HP:
http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c02702395

IBM:
http://aix.software.ibm.com/aix/efixes/security/cmsd_advisory.asc
IBM is not providing credits, as our system at that time and for this brand does not accept credits.

Oracle:
http://www.oracle.com/technetwork/topics/security/cpujan2011-194091.html


Sun Microsystems states:


DISCLOSURE TIMELINE
  • 2009-08-20 - Vulnerability reported to vendor
  • 2011-02-08 - Coordinated public release of advisory
CREDIT Rodrigo Rubira Branco (BSDaemon)
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