FileCOPA Directory Argument Handling BufferOverflow

2006.08.01
Risk: High
Local: No
Remote: Yes
CWE: CWE-Other


Ogólna skala CVSS: 6.4/10
Znaczenie: 4.9/10
Łatwość wykorzystania: 10/10
Wymagany dostęp: Zdalny
Złożoność ataku: Niska
Autoryzacja: Nie wymagana
Wpływ na poufność: Częściowy
Wpływ na integralność: Częściowy
Wpływ na dostępność: Brak

====================================================================== Secunia Research 25/07/2006 - FileCOPA Directory Argument Handling Buffer Overflow - ====================================================================== Table of Contents Affected Software....................................................1 Severity.............................................................2 Vendor's Description of Software.....................................3 Description of Vulnerability.........................................4 Solution.............................................................5 Time Table...........................................................6 Credits..............................................................7 References...........................................................8 About Secunia........................................................9 Verification........................................................10 ====================================================================== 1) Affected Software FileCOPA 1.01 released 2006-07-18. NOTE: Other versions may also be affected. ====================================================================== 2) Severity Rating: Moderate (High with anonymous access enabled) Impact: System compromise Where: Remote ====================================================================== 3) Vendor's Description of Software "FileCOPA takes the hard work out of running an FTP Server. The FileCOPA FTP Server Software installs on any version of the Microsoft Windows operating system with just a few clicks of the mouse and automatically configures itself for anonymous operation." Product Link: http://www.filecopa.com/ ====================================================================== 4) Description of Vulnerability Secunia Research has discovered a vulnerability in FileCOPA, which can be exploited by malicious users to compromise a vulnerable system. The vulnerability is caused due to an integer underflow error in the FTP service (filecpnt.exe) when processing directory arguments passed to certain FTP commands (e.g. "CWD", "DELE", "MDTM", and "MKD"). This can be exploited to cause a stack-based buffer overflow by passing a specially crafted, overly long argument to one of the affected FTP commands. Successful exploitation allows execution of arbitrary code. ====================================================================== 5) Solution Update to version 1.01 released 2006-07-21. ====================================================================== 6) Time Table 21/07/2006 - Vendor notified. 21/07/2006 - Vendor response. 25/07/2006 - Public disclosure. ====================================================================== 7) Credits Discovered by Carsten Eiram, Secunia Research. ====================================================================== 8) References The Common Vulnerabilities and Exposures (CVE) project has assigned CVE-2006-3768 for the vulnerability. ====================================================================== 9) About Secunia Secunia collects, validates, assesses, and writes advisories regarding all the latest software vulnerabilities disclosed to the public. These advisories are gathered in a publicly available database at the Secunia website: http://secunia.com/ Secunia offers services to our customers enabling them to receive all relevant vulnerability information to their specific system configuration. Secunia offers a FREE mailing list called Secunia Security Advisories: http://secunia.com/secunia_security_advisories/ ====================================================================== 10) Verification Please verify this advisory by visiting the Secunia website: http://secunia.com/secunia_research/2006-55/ Complete list of vulnerability reports published by Secunia Research: http://secunia.com/secunia_research/ ======================================================================


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