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Last updated: 12/21/2014 6:57:50 PM

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National Cyber Awareness System

Vulnerability Summary for CVE-2007-2850

Original release date: 05/24/2007
Last revised: 07/31/2014
Source: US-CERT/NIST

Overview

The Session Reliability Service (XTE) in Citrix MetaFrame Presentation Server 3.0, Presentation Server 4.0, and Access Essentials 1.0 and 1.5, allows remote attackers to bypass network security policies and connect to arbitrary TCP ports via a modified address:port string.

Impact

CVSS Severity (version 2.0):
CVSS v2 Base Score: 10.0 (HIGH) (AV:N/AC:L/Au:N/C:C/I:C/A:C) (legend)
Impact Subscore: 10.0
Exploitability Subscore: 10.0
CVSS Version 2 Metrics:
Access Vector: Network exploitable
Access Complexity: Low
Authentication: Not required to exploit
Impact Type: Allows unauthorized disclosure of information; Allows unauthorized modification; Allows disruption of service

Solution

The vendor has addressed this issue with the following product updates: MetaFrame Presentation Server 3.0 for Windows 2000 Server: EN - http://support.citrix.com/article/CTX112818 FR - http://support.citrix.com/article/CTX112821 DE - http://support.citrix.com/article/CTX112819 JA - http://support.citrix.com/article/CTX112820 ES - http://support.citrix.com/article/CTX112822 MetaFrame Presentation Server 3.0 for Windows Server 2003: EN - http://support.citrix.com/article/CTX112813 FR - http://support.citrix.com/article/CTX112816 DE - http://support.citrix.com/article/CTX112814 JA - http://support.citrix.com/article/CTX112815 ES - http://support.citrix.com/article/CTX112817 Citrix Presentation Server 4.0 for Windows 2000 Server: EN - http://support.citrix.com/article/CTX112844 FR - http://support.citrix.com/article/CTX112847 DE - http://support.citrix.com/article/CTX112845 JA - http://support.citrix.com/article/CTX112848 ES - http://support.citrix.com/article/CTX112846 Citrix Presentation Server 4.0 for Windows Server 2003: EN - http://support.citrix.com/article/CTX112839 FR - http://support.citrix.com/article/CTX112842 DE - http://support.citrix.com/article/CTX112840 JA - http://support.citrix.com/article/CTX112843 ES - http://support.citrix.com/article/CTX112841 Citrix Presentation Server 4.0 for Windows Server 2003 x64 Editions: EN - http://support.citrix.com/article/CTX112886 FR - http://support.citrix.com/article/CTX112887 DE - http://support.citrix.com/article/CTX112888 JA - http://support.citrix.com/article/CTX112890 ES - http://support.citrix.com/article/CTX112889 Citrix Access Essentials 1.0: EN - http://support.citrix.com/article/CTX112839 FR - http://support.citrix.com/article/CTX112842 DE - http://support.citrix.com/article/CTX112840 ES - http://support.citrix.com/article/CTX112841 Citrix Access Essentials 1.5: EN - http://support.citrix.com/article/CTX112839 FR - http://support.citrix.com/article/CTX112842 DE - http://support.citrix.com/article/CTX112840 ES - http://support.citrix.com/article/CTX112841

References to Advisories, Solutions, and Tools

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External Source: SECUNIA
Name: 25371
Type: Advisory; Patch Information
External Source: XF
Name: citrix-session-security-bypass(34448)
External Source: MISC
Name: http://fortconsult.net/files/fortconsult.dk/citrix_advisory.pdf
External Source: VUPEN
Name: ADV-2007-1918
External Source: SECTRACK
Name: 1018098
External Source: CONFIRM
Name: http://support.citrix.com/article/CTX112964

Technical Details

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