Siemens LOGO! CMR and SIMATIC RTU 3000 Incorrect Calculation of Buffer Size (CVE-2020-36475)

An issue was discovered in Mbed TLS before 2.25.0 and before 2.16.9 LTS and before 2.7.18 LTS. The calculations performed by mbedtlsmpiexpmod are not limited; thus, supplying overly large parameters could lead to denial of service when generating Diffie- Hellman key pairs. This plugin only works...

Siemens LOGO! CMR and SIMATIC RTU 3000 Use of Insufficiently Random Values (CVE-2021-37186)

A vulnerability has been identified in LOGO! CMR2020 All versions V2.2, LOGO! CMR2040 All versions V2.2, SIMATIC RTU3010C All versions V4.0.9, SIMATIC RTU3030C All versions V4.0.9, SIMATIC RTU3031C All versions V4.0.9, SIMATIC RTU3041C All versions V4.0.9. The underlying TCP/IP stack does not...

Siemens LOGO! CMR and SIMATIC RTU 3000 Improper Certificate Validation (CVE-2020-36478)

An issue was discovered in Mbed TLS before 2.25.0 and before 2.16.9 LTS and before 2.7.18 LTS. A NULL algorithm parameters entry looks identical to an array of REAL size zero and thus the certificate is considered valid. However, if the parameters do not match in any way, then the certificate...

Vulnerability of the Siemens LOGO! CMR family and SIMATIC RTU 3000 family security feature issues

The LOGO! CMR family is a communication system for monitoring and controlling distributed devices and systems via text messages or e-mail.Siemens SIMATIC RTU3000C is a compact RTU from Siemens, Germany is a low-power remote terminal unit RTU for energy self-sufficiency. A vulnerability in the...

PT-2021-21561

Name of the Vulnerable Software and Affected Versions LOGO! CMR2020 versions prior to V2.2 LOGO! CMR2040 versions prior to V2.2 SIMATIC RTU3010C versions prior to V4.0.9 SIMATIC RTU3030C versions prior to V4.0.9 SIMATIC RTU3031C versions prior to V4.0.9 SIMATIC RTU3041C versions prior to V4.0.9...

Siemens LOGO! CMR and SIMATIC RTU 3000 (Update A)

1. EXECUTIVE SUMMARY CVSS v3 5.4 ATTENTION: Low attack complexity Vendor: Siemens Equipment: LOGO! CMR, SIMATIC RTU 3000 Vulnerability: Use of Insufficiently Random Values 2. UPDATE INFORMATION This updated advisory is a follow-up to the original advisory titled ICSA-21-257-13 Siemens LOGO! CMR...

Siemens LOGO! CMR and SIMATIC RTU 3000

1. EXECUTIVE SUMMARY CVSS v3 7.5 ATTENTION: Exploitable remotely/low attack complexity Vendor: Siemens Equipment: LOGO! CMR2020, LOGO! CMR2040 and SIMATIC RTU 3000 family Vulnerabilities: Incorrect Calculation of Buffer Size, Improper Certificate Validation 2. RISK EVALUATION Successful...