Terminal Server Client hostname buffer overflow

terminal-server-hostname-bo (65100)

High Risk

Description:

Terminal Server Client (tsclient) is vulnerable to a stack-based buffer overflow, caused by improper bounds checking by the tsc_launch_remote() function when processing the hostname parameter. By persuading a victim to open a specially-crafted RDP file containing an overly long string, a remote attacker could overflow a buffer and execute arbitrary code on the system or cause the application to crash.

*CVSS:

Base Score:	6.8
Access Vector:	Network
Access Complexity:	Medium
Authentication:	None
Confidentiality Impact:	Partial
Integrity Impact:	Partial
Availability Impact:	Partial
Temporal Score:	6.1
Exploitability:	Functional
Remediation Level:	Unavailable
Report Confidence:	Uncorroborated

Consequences:

Denial of Service

Remedy:

No remedy available as of May 1, 2013.

References:

• Offensive Security Exploit Database [02-02-2011]: Terminal Server Client .rdp Denial of Service.
• Terminal Server Client: Terminal Server Client.
• BID-46099: Terminal Server Client '.rdp' File Processing Remote Denial of Service Vulnerability
• CVE-2011-0900: Stack-based buffer overflow in the tsc_launch_remote function (src/support.c) in Terminal Server Client (tsclient) 0.150, and possibly other versions, allows user-assisted remote attackers to execute arbitrary code via a .RDP file with a long hostname argument.
• OSVDB ID: 70749: Terminal Server Client (tsclient) src/support.c tsc_launch_remote() Function Multiple Parameter RDP File Handling Overflows
• SA43120: Terminal Server Client (tsclient) RDP File Processing Buffer Overflows

Platforms Affected:

• Terminal Server Client Terminal Server Client 0.150
• Terminal Server Client Terminal Server Client 2.0.1

Reported:

Feb 02, 2011

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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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