Stack-based buffer overflow vulnerability exists in multiple laser printers and MFPs which implement Ricoh Web Image Monitor. If this vulnerability is exploited, receiving a specially crafted request created and sent by an attacker may lead to arbitrary code execution and/or a denial-of-service (DoS) condition. As for the details of affected product names and versions, refer to the information provided by the vendors under [References].

Stack-based buffer overflow vulnerability exists in multiple Ricoh laser printers and MFPs which implement Web Image Monitor. If this vulnerability is exploited, receiving a specially crafted request created and sent by an attacker may lead to arbitrary code execution and/or a denial-of-service (DoS) condition. As for the details of affected product names and versions, refer to the information provided by the vendor under [References].

Web Image Monitor provided by Ricoh Company, Ltd. is an web server included and runs in laser printers and MFPs (multifunction printers). Web Image Monitor contains a stack-based buffer overflow vulnerability (CWE-121) due to inappropriate parsing process of HTTP request. Zhihong Tian, Hui Lu, Guocheng Wu, and Xingchi Chen of the Cyberspace Advanced Technology Institute of Guangzhou University reported this vulnerability to Ricoh Company, Ltd. directly and coordinated. After the coordination, Ricoh Company, Ltd. reported this case to IPA under Information Security Early Warning Partnership, and JPCERT/CC coordinated with Ricoh Company, Ltd. for JVN publication.