Vulnerable Systems:
* Base Lexmark Model Printers
* IPDS DLE Printers
* Forms DLE Printers
* Barcode DLE Printers
* Prescribe DLE Printers
* PrintCryption DLE PRinters
Lexmark products have connection flood protection mechanisms that limit the number of simultaneous network connections that can be made to the device on most TCP service ports. (21/FTP 79/Finger, 515/LPD, 631/IPP, 5001, 9100-9104, 9200, 9300, 9400, 9500-9501 & 9600) The FTP service exception handler does not properly maintain the state of the flood protection when passive FTP connections are aborted. Once a sufficient number of passive FTP connections have timed out (typically 15), the flood protection is enabled and is never reset.
Patch Availability:
To obtain firmware that resolves this issue or if you have special code, please contact Lexmark s Technical Support Center to find your local support center.
Workaround:
The flood protection can be reset by resetting the network adapter, or by power cycling the device.