CA ARCserve Backup DB Engine Denial of Service

Assurent ID: FSC20081009-12

1. Affected Software

  CA ARCserve Backup 11.1 Windows
  CA ARCserve Backup 11.5 Windows
  CA ARCserve Backup 12.0 Windows

Reference: http://www.ca.com/us/data-loss-prevention.aspx


2. Vulnerability Summary

A vulnerability has been discovered in the DB Engine component of CA ARCserve Backup. Insufficient input validation when processing remote procedure call (RPC) requests is the cause of this vulnerability.


3. Vulnerability Analysis

A remote unauthenticated attacker can exploit this vulnerability by sending a crafted message to the target server on TCP port 6504. A successful attack could cause a denial of service condition for the DB Engine.


4. Vulnerability Detection

Assurent has confirmed the vulnerability in:

  CA ARCserve Backup 11.1 Windows
  CA ARCserve Backup 11.5 Windows
  CA ARCserve Backup 12.0 Windows

5. Workaround

Apply the vendor patch or block communication from untrusted networks to TCP port 6504.


6. Vendor Response

CA has released a bulletin addressing this vulnerability. 

Reference: https://support.ca.com/irj/portal/anonymous/phpsupcontent?contentID=188143


7. Disclosure Timeline

  2008-05-29 Reported to vendor
  2008-05-29 Initial vendor response
  2008-10-09 Coordinated public disclosure


8. Credits

Vulnerability Research Team, Assurent Secure Technologies, a TELUS company


9. References

  CVE: CVE-2008-4399
  Vendor: 188143


10. About Assurent VRS

Assurent's Vulnerability Research Service (VRS) for security product vendors, and Threat Protection Programs (TPP) for MSPs and enterprise security teams, help to eliminate the significant costs incurred by security product vendors, MSPs, and enterprise security teams in responding to and managing critical new security vulnerabilities and other threats including worm & virus outbreaks and other malware. The VRS and TPP services are real-time feeds providing subscribers with detailed analysis of the top security vulnerabilities, focused on the specific needs of each group of customers. 

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