GEN:SID | 1:1888 |
Message | FTP SITE CPWD overflow attempt |
Summary | This event is generated when an attempt is made to exploit a known vulnerability in WS_FTP.
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Impact | Serious. Execution of arbitrary code is possible.
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Detailed Information | Executing site cpwd with an specially crafted argument can cause a buffer overflow in WS_FTP that would allow arbitrary code to be run on the ftp server.
The 'site cpwd' command seems to be unique to ws_ftp. This command is used to allow users to change there passwords while using an ftp session. It is possible to execute 'site cpwd' with an specially crafted argument can cause a buffer overflow in WS_FTP. This would allow arbitrary code to be run on the ftp server. This requires that the user be logged into the ftp server before executing the 'site cpwd' command.
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Affected Systems | WS_FTP up to an including 3.12
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Attack Scenarios | An attacker needs to authenticate to an ftp server running the affected software then supply a specially crafted command to cause the buffer overflow condition to occur.
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Ease of Attack | Simple.
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Corrective Action | Upgrade to the latest non-affected version of the software.
Apply the appropriate vendor supplied patches.
Consider using scp as a secure replacement for ftp.
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Additional References | |
Rule References | bugtraq: 5427
cve: 2002-0826
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