IBM Informix Dynamic Server librpc.dll buffer overflow

ibm-ids-portmap-bo (56586) The risk level is classified as HighHigh Risk

Description:

IBM Informix Dynamic Server is vulnerable to a stack-based buffer overflow, caused by a signedness error in the librpc.dll RPC protocol parsing library as used by the ISM Portmapper service (portmap.exe) binary. By sending and overly long parameter during authentication, a remote attacker could overflow a buffer and execute arbitrary code with SYSTEM privileges or cause the application to crash.

*CVSS:

Base Score: 10
  Access Vector: Network
  Access Complexity: Low
  Authentication: None
  Confidentiality Impact: Complete
  Integrity Impact: Complete
  Availability Impact: Complete
 
Temporal Score: 7.8
  Exploitability: Proof-of-Concept
  Remediation Level: Official-Fix
  Report Confidence: Confirmed

Consequences:

Gain Access

Remedy:

For IBM Informix Dynamic Server 10:
Apply the latest Fix Pack (10.00.TC10 or later) or APAR IC55329. See References.

For IBM Informix Dynamic Server 11:
Apply the latest Fix Pack (11.10.TC3 or later) or APAR IC55330. See References.

For EMC Legato Networker:
Apply the appropriate patch for your system (ESA-08-007), available for registered users from the EMC Web site. See References.

References:

  • EMC Web site: Welcome to EMC's Powerlink.
  • EMC Web Site: EMC Legato Networker.
  • IBM Web site: APAR IC55329.
  • IBM Web site: APAR IC55330.
  • Offensive Security Exploit Database [04-08-2010]: Multiple Vendor librpc.dll Signedness Error Remote Code Execution Vulnerability .
  • ZDI-10-023: Multiple Vendor librpc.dll Signedness Error Remote Code Execution Vulnerability.
  • BID-38471: IBM Informix Dynamic Server 'librpc.dll' Multiple Buffer Overflow Vulnerabilities
  • BID-38472: Multiple Vendor 'librpc.dll' Stack Buffer Overflow Vulnerability
  • CVE-2009-2754: Integer signedness error in the authentication functionality in librpc.dll in the Informix Storage Manager (ISM) Portmapper service (aka portmap.exe), as used in IBM Informix Dynamic Server (IDS) 10.x before 10.00.TC9 and 11.x before 11.10.TC3 and EMC Legato NetWorker, allows remote attackers to execute arbitrary code via a crafted parameter size that triggers a stack-based buffer overflow.
  • SA38731: IBM Informix Dynamic Server RPC Implementation Vulnerabilities

Platforms Affected:

  • EMC Legato NetWorker
  • IBM Informix Dynamic Server 10.0
  • IBM Informix Dynamic Server 11.1

Reported:

Mar 01, 2010

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