Cisco Secure Access Control Server (ACS) for Windows User-Changeable Password (UCP) utility CSuserCGI.exe buffer overflow

cisco-acs-ucp-csusercgi-bo (41154) The risk level is classified as HighHigh Risk

Description:

The Cisco Secure Access Control Server (ACS) for Windows User-Changeable Password (UCP) utility is vulnerable to multiple stack-based buffer overflows, caused by improper bounds checking by CSuserCGI.exe. By sending an overly long request to the Logout, Main, and ChangePass parameters, a remote attacker could overflow a buffer and execute arbitrary code on the system with elevated privileges or cause the application to crash.

Platforms Affected:

  • Cisco, ACS for Windows
  • Cisco, ACS Solution Engine
  • Cisco, User Changeable Password 4.1

Remedy:

Refer to cisco-sa-20080312-ucp for patch, upgrade or suggested workaround information. See References.

Consequences:

Gain Access

References:

  • cisco-sa-20080312-ucp, Cisco Secure Access Control Server for Windows User-Changeable Password Vulnerabilities at http://www.cisco.com/warp/public/707/cisco-sa-20080312-ucp.shtml .
  • Recurity Labs GmbH, 12.03.2008, Cisco Secure Access Control Server (ACS) for Windows User-Changeable Password (UCP) application at http://www.recurity-labs.com/content/pub/RecurityLabs_Cisco_ACS_UCP_advisory.txt.
  • BID-28222: Cisco User-Changeable Password (UCP) 'CSuserCGI.exe' Multiple Remote Vulnerabilities
  • CVE-2008-0532: Multiple buffer overflows in securecgi-bin/CSuserCGI.exe in User-Changeable Password (UCP) before 4.2 in Cisco Secure Access Control Server (ACS) for Windows and ACS Solution Engine allow remote attackers to execute arbitrary code via a long argument located immediately after the Logout argument, and possibly unspecified other vectors.
  • FrSIRT/ADV-2008-0868: Cisco User-Changeable Password Remote Buffer Overflow Vulnerabilities
  • SA29351: Cisco User-Changeable Password Multiple Vulnerabilities
  • SECTRACK ID: 1019608: Cisco Secure Access Control Server Buffer Overflow in UCP CGI Lets Remote Users Execute Arbitrary Code

Reported:

Mar 12, 2008

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