The secrets of Schneider Electric’s UMAS protocol

UMAS Unified Messaging Application Services is a proprietary Schneider Electric SE protocol used to configure and monitor Schneider Electric PLCs. Schneider Electric controllers that use UMAS include Modicon M580 CPU part numbers BMEP and BMEH and Modicon M340 CPU part numbers BMXP34. Controllers...

Schneider Electric Modicon M580 UMAS cleartext data transmission vulnerability

Summary An exploitable information disclosure vulnerability exists in the UMAS functionality of the Schneider Electric Modicon M580 Programmable Automation Controller, firmware version SV2.80. An attacker can sniff network traffic to exploit this vulnerability. Tested Versions Schneider Electric...

Schneider Electric Modicon M580 UMAS REST API getcominfo information disclosure vulnerability

Summary An exploitable information disclosure vulnerability exists in the UMAS REST API getcominfo functionality of the Schneider Electric Modicon M580 Programmable Automation Controller firmware version SV2.80. A specially crafted HTTP request can cause the device to return arbitrary memory,...

Schneider Electric Modicon M580 UMAS REST API readbolarray information disclosure vulnerability

Summary An exploitable information disclosure vulnerability exists in the UMAS REST API readbolarray functionality of the Schneider Electric Modicon M580 Programmable Automation Controller firmware version SV2.80. A specially crafted HTTP request can cause the device to return blocks of program...

Schneider Electric Modicon M580 UMAS REST API getcominfo denial-of-service vulnerability

Summary An exploitable denial of service vulnerability exists in the UMAS REST API getcominfo functionality of the Schneider Electric Modicon M580 Programmable Automation Controller firmware version SV2.80. A specially crafted HTTP request can cause the device to enter a non-recoverable fault...

Schneider Electric Modicon M580 TFTP server information disclosure vulnerability

Summary An exploitable information disclosure vulnerability exists in the TFTP server functionality of the Schneider Electric Modicon M580 Programmable Automation Controller. A specially crafted TFTP get request can cause a file download, resulting in disclosure of sensitive information. An...

Schneider Electric Modicon M580 UMAS Function Code 0x29 Denial of Service Vulnerability

Summary An exploitable denial of service vulnerability exists in the UMAS function code 0x29 functionality of the Schneider Electric Modicon M580 Programmable Automation Controller firmware version SV2.70. A specially crafted UMAS command can cause the device to enter a non-recoverable fault stat...

Schneider Electric Modicon M580 UMAS Read System Coils and Registers Denial of Service Vulnerability

Summary An exploitable denial of service vulnerability exists in the UMAS Read System Coils and Registers functionality of the Schneider Electric Modicon M580 Programmable Automation Controller firmware version SV2.80. A specially crafted UMAS command can cause the device to enter a non-recoverab...

Schneider Electric Modicon M580 UMAS read strategy denial-of-service vulnerability

Summary An exploitable denial-of-service vulnerability exists in the UMAS read strategy functionality of the Schneider Electric Modicon M580 programmable automation controller, firmware version SV2.70. A specially crafted set of UMAS commands can cause the device to enter a non-recoverable fault...

Schneider Electric Modicon Multiple Denial Of Service Vulnerabilities (CVE-2018-7843; CVE-2018-7852; CVE-2018-7853; CVE-2018-7854; CVE-2018-7855; CVE-2018-7856; CVE-2018-7857; CVE-2019-6807)

Multiple denial of service vulnerabilities exist in Schneider Electric Modicon. A remote unauthenticated attacker could send crafted UMAS command packets to cause denial of service conditions...

Vulnerability Spotlight: Multiple vulnerabilities in Schneider Electric Modicon M580

Jared Rittle of Cisco Talos discovered these vulnerabilities. Executive summary There are several vulnerabilities in the Schneider Electric Modicon M580 that could lead to a variety of conditions, including denial of service and the disclosure of sensitive information. The Modicon M580 is the...

Schneider Electric Modicon M580 UMAS Improper Authentication Vulnerability

Summary An exploitable improper authentication vulnerability exists in the UMAS PLC reservation function of the Schneider Electric Modicon M580 Programmable Automation Controller, firmware version SV2.70. A specially crafted UMAS command can allow an attacker to masquerade as an authenticated use...

Schneider Electric Modicon M580 UMAS function code 0x6d multiple denial-of-service vulnerabilities

Summary Multiple denial-of-service vulnerabilities exist in the UMAS protocol functionality of the Schneider Electric Modicon M580 Programmable Automation Controller, firmware version SV2.70. Specially crafted UMAS commands can cause the device to enter a non-recoverable fault state, resulting in...

Schneider Electric Modicon M580 UMAS read system blocks and bits information disclosure vulnerability

Summary An exploitable information disclosure vulnerability exists in the UMAS Read System Blocks and Bits functionality of the Schneider Electric Modicon M580 Programmable Automation Controller, firmware version SV2.70. A specially crafted UMAS command can cause the device to return blocks of...

Schneider Electric Modicon M580 UMAS release reservation denial-of-service vulnerability

Summary An exploitable denial-of-service vulnerability exists in the UMAS Release PLC Reservation function of the Schneider Electric Modicon M580 Programmable Automation Controller, firmware version SV2.70. A specially crafted UMAS command can cause the device to invalidate a session without...

Schneider Electric UnityPro PLC simulator remote code execution vulnerability

Summary An exploitable remote code execution vulnerability exists in the UMAS strategy programming functionality of the Schneider Electric Unity Pro L Programming Software PLC Simulator. A specially crafted sequence of UMAS commands sent to the software’s PLC simulator can cause a modified strate...

Schneider Electric Modicon M580 UMAS memory block read denial-of-service vulnerability

Summary An exploitable denial-of-service vulnerability exists in the UMAS memory block read function of the Schneider Electric Modicon M580 programmable automation controller, firmware version SV2.70. A specially crafted UMAS command can cause the device to enter a non-recoverable fault state,...

Schneider Electric Modicon M580 UMAS strategy transfer denial-of-service vulnerability

Summary An exploitable denial-of-service vulnerability exists in the UMAS strategy transfer functionality of the Schneider Electric Modicon M580 programmable automation controller firmware version SV2.70. A specially crafted UMAS command can cause the device to enter a recoverable fault state,...

Schneider Electric Modicon M580 UMAS Read Memory Block Out Of Bounds Information Disclosure Vulnerability

Summary An exploitable information disclosure vulnerability exists in the UMAS memory block read functionality of the Schneider Electric Modicon M580 Programmable Automation Controller. A specially crafted UMAS request can cause an out of bounds read, resulting in disclosure of sensitive...

Schneider Electric Modicon M580 UMAS strategy read information disclosure vulnerability

Summary An exploitable information disclosure vulnerability exists in the UMAS strategy read functionality of the Schneider Electric Modicon M580 Programmable Automation Controller firmware version SV2.70. A specially crafted UMAS command can cause the device to return blocks of the programmed...