VENDOR CONTRIBUTION: As part of Claroty’s continued mission and focus to support and secure critical infrastructure, researcher Tal Keren has discovered a vulnerability (CVE-2019-19279) in the Siemens Digsi 4 protocol.
A vulnerability in the Siemens Digsi 4 protocol, which allowed a denial-of-service attack against the company's SIPROTEC 4 protection relays, was discovered recently by the Israeli security outfit Claroty and fixed in co-ordination with Siemens.
According to unconfirmed reports, there is a hidden access 'backdoor' in the Siemens SIMATIC S7-1200 PLC (programmable logic controller) which would give attackers access to any device.
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