| GEN:SID | 1:3077 |
| Message | FTP RNFR overflow attempt |
| Summary | This event is generated when an attempt is made to exploit a buffer overflow associated with the RNFR command of the IPSwitch WS_FTP server.
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| Impact | A successful attack may cause a denial of service or a buffer overflow and the subsequent execution of arbitrary code on a vulnerable server.
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| Detailed Information | A vulnerability exists in the way that the IPSwitch WS_FTP service handles the RNFR command. An excessively long parameter supplied to the command can trigger a denial of service or a buffer overflow and the subsequent execution of arbitrary code on a vulnerable server.
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| Affected Systems | IPSwitch WS_FTP 4.x, 5.x
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| Attack Scenarios | An attacker can supplied an overly long parameter with the RNFR command, possibly causing denial of service or a buffer overflow.
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| Ease of Attack | Simple.
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| Corrective Action | Upgrade to the latest non-affected version of the software.
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| Additional References | Secunia: http://secunia.com/advisories/13334
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