Geo++ GNCASTER nonce replay

gncaster-nonce-replay (55977) The risk level is classified as MediumMedium Risk

Description:

Geo++ GNCASTER could allow a remote attacker to launch a replay attack. The server generates a nonce for HTTP Digest authentication and utilizes the same nonce for all other authentication until it is restarted. A remote attacker could exploit this vulnerability using a network sniffing tool to capture packets and replay them at a later time.

*CVSS:

Base Score: 7.5
  Access Vector: Network
  Access Complexity: Low
  Authentication: None
  Confidentiality Impact: Partial
  Integrity Impact: Partial
  Availability Impact: Partial
 
Temporal Score: 5.5
  Exploitability: Unproven
  Remediation Level: Official-Fix
  Report Confidence: Confirmed

Consequences:

Gain Access

Remedy:

Upgrade to the latest version of Geo++ (1.4.0.8 or later), available from the Geo++ Web site. See References.

References:

  • Geo++ Web site: GNCASTER.
  • rt-sa-2010-003: Geo++(R) GNCASTER: Faulty implementation of HTTP Digest Authentication .
  • CVE-2010-0554: The HTTP Authentication implementation in Geo++ GNCASTER 1.4.0.7 and earlier uses the same nonce for all authentication, which allows remote attackers to hijack web sessions or bypass authentication via a replay attack.
  • OSVDB ID: 62014: Geo++ GNCASTER HTTP Digest Authentication Nonce Regeneration Weakness
  • SA38323: Geo++ GNCASTER Multiple Weaknesses and Vulnerabilities

Platforms Affected:

  • Geo++ GNCASTER 1.4.0.7

Reported:

Jan 27, 2010

The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall the author/distributor (IBM Internet Security Systems X-Force) be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.

For corrections or additions please email ignore thisxforceignore this@ignore thisus.ignore thisibm.comignore this

Return to the main page

* According to the Forum of Incident Response and Security Teams (FIRST), the Common Vulnerability Scoring System (CVSS) is an "industry open standard designed to convey vulnerability severity and help to determine urgency and priority of response." IBM PROVIDES THE CVSS SCORES "AS IS" WITHOUT WARRANTY OF ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT OF ANY ACTUAL OR POTENTIAL SECURITY VULNERABILITY.
The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall IBM be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.

About IBM Security Systems

IBM Security Systems include an extensive portfolio of hardware, software solutions, professional and managed services offerings covering the spectrum of IT and business security risks: people and identity, data and information, application and process, network, server and endpoint and physical infrastructure, empowering clients to innovate and operate their businesses on the most secure infrastructure platforms. Through world-class solutions that address risk across the enterprise, IBM helps organizations build a strong security posture that helps reduce costs, improve service, and manage risk. IBM X-Force(R) Research and Development is one of the most renowned commercial security research and development groups in the world. For more information on how to address today's biggest risks, please visit us at ibm.com/security.