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Ricoh Warns of Potential MFP Security Vulnerability

by · Published · Updated

Ricoh Company of Japan today issued a security notice involving a potential security vulnerability for its copier/MFPs and printers.

The firm says it’s aware of the registration of CVE-2021-33945, a vulnerability that could potentially allow denial-of-service (DoS) attacks by causing certain MFPs and printers to consume large amounts of memory. This vulnerability is due to module behavour, and Ricoh products that use this module are listed here as affected products.

Resolution

Ricoh will release updated firmware on its driver site as they become available. The updates will be published here.

Workaround for Customers Using Affected Products

When using products affected by this security issue, Ricoh strongly advises that customers use SSID (Service Set Identifier) and password and avoid using a WPS (Wi-Fi Protected Setup) connection when establishing a wireless connections. Please refer to the following steps:

Models with touch panelModels with 4-line LCD panelModels with 2-line LCD panelModels without LCD panel
Network connection by selecting an access point from the network list
  1. At the home screen, select “Setting” and “Network Settings.” If there is a password set up, enter the administrator password.
  2. Select “Wi-fi Configuration” and then “Setup Wizard”
  3. Select an access point from the list of SSID/access points
  4. Enter password to connect
  1. Press Menu key to transition to Settings and select “Wi-Fi Setup Wizard” If there is a password set up, enter the administrator password.
  2. Select an access point from the list of SSID/access points
  3. Enter password to connect
  1. Press Menu key to transition to Menu and select “Host Interface”, “Network Setup”, “Wi-fi Config”, and “Setup Wizard”.
  2. Select an access point from the list of SSID/access points
  3. Enter password to connect
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Network connection by direct input of SSID
  1. At the home screen, select “Setting” and “Network Settings.” If there is a password set up, enter the administrator password.
  2. Select “enter SSID”
  3. Enter SSID and password to connect to network
  1. Press Menu key to transition to Settings and select “Wi-Fi Setup Wizzard” If there is a password set up, enter the administrator password.
  2. Select “Input SSID” and enter SSID and password to connect to network
  1. Press Menu key to transition to Menu and select “Host Interface”, “Network Setup”, “Wi-fi Config”, and “Setup Wizard”.
  2. Select “Input SSID” and enter SSID and password to connect to network
  1. Connect your PC with device via USB
  2. Launch Smart Organizing Monitor
  3. Click [User Tool] tab
  4. Click [Printer Configuration] button and input Access Code if necessary.
  5. Click [Wireless] tab
  6. Check “Manual Setup” at “Configuration Method” menu.
  7. Enter SSID and Password to connect to network