In short
LOGO! controllers fail to validate offset values in TCP packets, allowing attackers to read sensitive data from device memory. This can expose confidential information stored on the controller.
Technical detail
The vulnerability exists in TCP packet handling where offset values are not properly validated before being used to access memory. An attacker on the network can craft malicious TCP packets with arbitrary offset values to read unintended memory regions, potentially exposing sensitive data or configuration details. No authentication is required to exploit this information disclosure vulnerability.
Summary generated and translated by AI from the official description.
A vulnerability has been identified in LOGO! 12/24RCE (6ED1052-1MD08-0BA1) (All versions), LOGO! 12/24RCEo (6ED1052-2MD08-0BA1) (All versions), LOGO! 230RCE (6ED1052-1FB08-0BA1) (All versions), LOGO! 230RCEo (6ED1052-2FB08-0BA1) (All versions), LOGO! 24CE (6ED1052-1CC08-0BA1) (All versions), LOGO! 24CEo (6ED1052-2CC08-0BA1) (All versions), LOGO! 24RCE (6ED1052-1HB08-0BA1) (All versions), LOGO! 24RCEo (6ED1052-2HB08-0BA1) (All versions), SIPLUS LOGO! 12/24RCE (6AG1052-1MD08-7BA1) (All versions), SIPLUS LOGO! 12/24RCEo (6AG1052-2MD08-7BA1) (All versions), SIPLUS LOGO! 230RCE (6AG1052-1FB08-7BA1) (All versions), SIPLUS LOGO! 230RCEo (6AG1052-2FB08-7BA1) (All versions), SIPLUS LOGO! 24CE (6AG1052-1CC08-7BA1) (All versions), SIPLUS LOGO! 24CEo (6AG1052-2CC08-7BA1) (All versions), SIPLUS LOGO! 24RCE (6AG1052-1HB08-7BA1) (All versions), SIPLUS LOGO! 24RCEo (6AG1052-2HB08-7BA1) (All versions). Affected devices do not properly validate an offset value which can be defined in TCP packets when calling a method. This could allow an attacker to retrieve parts of the content of the memory.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:P/RL:T/RC:C
Related CVEs — Siemens LOGO! 12/24RCE
In the same product, most dangerous first.