Citrix Presentation Server ICA protocol weak security

citrix-presentationserver-ica-weak-security (42444) The risk level is classified as LowLow Risk

Description:

Citrix Presentation Server could provide weaker than expected security, caused be an error in the ICA protocol. The SecureICA and ICA Basic encryption methods could allow connections using lower than minimum configured encryption settings. An attacker could exploit this vulnerability to launch further attacks against the system.

*CVSS:

Base Score: 5
  Access Vector: Network
  Access Complexity: Low
  Authentication: None
  Confidentiality Impact: None
  Integrity Impact: Partial
  Availability Impact: None
 
Temporal Score: 3.7
  Exploitability: Unproven
  Remediation Level: Official-Fix
  Report Confidence: Confirmed

Consequences:

Other

Remedy:

Refer to CTX114893 for patch, upgrade or suggested workaround information. See References.

References:

  • CTX114893: Vulnerability in Citrix Presentation Server could result in cryptographic settings not being correctly enforced.
  • BID-29233: Citrix Presentation Server ICA Protocol Weak Encryption Vulnerability
  • CVE-2008-2299: Unspecified vulnerability in SecureICA and ICA Basic encryption of Citrix Presentation Server 4.5 and earlier, Access Essentials 2.0 and earlier, and Desktop Server 1.0 can cause clients to use weaker encryption settings than configured by the administrator, which might allow attackers to bypass intended restrictions.
  • OSVDB ID: 45328: Citrix Presentation Server ICA Protocol Encryption Downgrade Weakness
  • SA30271: Citrix Presentation Server Weakness and Unauthorised Access
  • SECTRACK ID: 1020026: Citrix Presentation Server May Use a Weaker Encryption Algorithm

Platforms Affected:

  • Citrix Access Essentials 1.0
  • Citrix Access Essentials 1.5
  • Citrix Access Essentials 2.0
  • Citrix Desktop Server 1.0
  • Citrix MetaFrame Presentation Server 3.0
  • Citrix MetaFrame Presentation Server 4.0
  • Citrix Presentation Server 4.0
  • Citrix Presentation Server 4.5

Reported:

May 12, 2008

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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.

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