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TITLE:
Terminal Server Client (tsclient) RDP File Processing Buffer
Overflows

SECUNIA ADVISORY ID:
SA43120

VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/43120/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=43120

RELEASE DATE:
2011-02-02

DISCUSS ADVISORY:
http://secunia.com/advisories/43120/#comments

AVAILABLE ON SITE AND IN CUSTOMER AREA:
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http://secunia.com/advisories/43120/

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https://ca.secunia.com/?page=viewadvisory&vuln_id=43120

ONLY AVAILABLE WITH SECUNIA CSI AND SECUNIA PSI:
 * AUTOMATED SCANNING

http://secunia.com/vulnerability_scanning/personal/
http://secunia.com/vulnerability_scanning/corporate/wsus_sccm_3rd_third_party_patching/

DESCRIPTION:
Multiple vulnerabilities have been discovered in Terminal Server
Client (tsclient), which can be exploited by malicious people to
compromise a user's system.

1) A boundary error in the "tsc_launch_remote()" function
(src/support.c) when processing a "hostname" parameter can be
exploited to cause a stack-based buffer overflow via an overly long
string (greater than 255 bytes).

2) A boundary error in the "tsc_launch_remote()" function
(src/support.c) when processing a "username" parameter can be
exploited to cause a stack-based buffer overflow via an overly long
string (greater than 255 bytes).

3) A boundary error in the "tsc_launch_remote()" function
(src/support.c) when processing a "password" parameter can be
exploited to cause a stack-based buffer overflow via an overly long
string (greater than 255 bytes).

4) A boundary error in the "tsc_launch_remote()" function
(src/support.c) when processing a "domain" parameter can be exploited
to cause a stack-based buffer overflow via an overly long string
(greater than 255 bytes).

Successful exploitation of these vulnerabilities may allow execution
of arbitrary code, but requires tricking a user into opening a
malicious RDP file.

The vulnerabilities are confirmed in version 0.150. Other versions
may also be affected.

SOLUTION:
Do not open RDP files from untrusted sources.

PROVIDED AND/OR DISCOVERED BY:
D3V!L FUCKER

Additional information provided by Secunia Research.

OTHER REFERENCES:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

DEEP LINKS:
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http://secunia.com/products/corporate/EVM/

EXTENDED DESCRIPTION:
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EXTENDED SOLUTION:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

EXPLOIT:
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http://secunia.com/products/corporate/EVM/

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About:
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