Advisory Details

March 1st, 2010

IBM Informix librpc.dll Multiple Remote Code Execution Vulnerabilities

ZDI-10-022
ZDI-CAN-294

CVE ID CVE-2009-2753
CVSS SCORE 10.0, (AV:N/AC:L/Au:N/C:C/I:C/A:C)
AFFECTED VENDORS IBM
AFFECTED PRODUCTS Informix
TREND MICRO CUSTOMER PROTECTION Trend Micro TippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID 5937. 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 both IBM Informix Dynamic Server. User interaction is not required to exploit this vulnerability.

The specific flaws exist within the RPC protocol parsing library, librpc.dll, utilized by the ISM Portmapper service (portmap.exe) bound by default to TCP port 36890. During authentication, a lack of proper sanity checking on supplied parameter sizes can result in exploitable stack and heap based buffer overflows leading to arbitrary code execution under the context of the SYSTEM user.

ADDITIONAL DETAILS

IBM states that this issue was first fixed in: IDS 10.00.TC9, IDS 11.10.TC3 Recommended fix pack version: IDS 10.00.TC10, IDS 11.10.TC3 4. URL to APAR or fixpack Fix pack download URL: http://www-933.ibm.com/support/fixcentral/
APAR URLs
http://www.ibm.com/support/docview.wss?uid=swg1IC55329
http://www.ibm.com/support/docview.wss?uid=swg1IC55330


DISCLOSURE TIMELINE
  • 2008-02-07 - Vulnerability reported to vendor
  • 2010-03-01 - Coordinated public release of advisory
CREDIT Sebastian Apelt (sebastian.apelt@siberas.de)
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