Directory Traversal Vulnerability in CP-8031 and CP-8050 Master Modules by Siemens

CVE-2023-42796

What is CVE-2023-42796?

A vulnerability has been identified in the CP-8031 and CP-8050 MASTER MODULES from Siemens, where the web server does not adequately sanitize user input for the /sicweb-ajax/tmproot/ endpoint. This oversight allows an authenticated remote attacker to traverse directories on the affected systems, potentially enabling them to download arbitrary files. Furthermore, by exploiting active session IDs, there is a risk that attackers could escalate their privileges to that of an administrator, increasing the severity of the threat posed by this vulnerability.

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