ZDI-11-062: Multiple Vendor Calendar Manager RPC Service Remote Code Execution Vulnerability

[ZDI Disclosures <zdi-disclosures@xxxxxxxxxxxxxxxx>]

ZDI-11-062: Multiple Vendor Calendar Manager RPC Service Remote Code Execution 
Vulnerability

http://www.zerodayinitiative.com/advisories/ZDI-11-062

February 8, 2011

-- CVE ID:
CVE-2010-4435

-- CVSS:
10, (AV:N/AC:L/Au:N/C:C/I:C/A:C)

-- Affected Vendors:
Hewlett-Packard
IBM
Sun Microsystems

-- Affected Products:
Hewlett-Packard HP-UX
IBM AIX
Sun Microsystems Solaris 10

-- TippingPoint(TM) IPS Customer Protection:
TippingPoint IPS customers have been protected against this
vulnerability by Digital Vaccine protection filter ID 9267. 
For further product information on the TippingPoint IPS, visit:

    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:
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

-- Disclosure Timeline:
2009-08-20 - Vulnerability reported to vendor
2011-02-08 - Coordinated public release of advisory

-- Credit:
This vulnerability was discovered by:
    * Rodrigo Rubira Branco (BSDaemon)

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