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Vulnerability of Siemens SIMATIC S7: denial of service via HTTP Requests

Synthesis of the vulnerability 

An attacker can trigger a fatal error via HTTP Requests of Siemens SIMATIC S7, in order to trigger a denial of service.
Impacted software: SIMATIC.
Severity of this computer vulnerability: 2/4.
Creation date: 11/02/2020.
Références of this announce: CERTFR-2020-AVI-077, CERTFR-2020-AVI-090, CVE-2019-13940, SSA-431678, VIGILANCE-VUL-31576.

Description of the vulnerability 

An attacker can trigger a fatal error via HTTP Requests of Siemens SIMATIC S7, in order to trigger a denial of service.
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This weakness alert impacts software or systems such as SIMATIC.

Our Vigil@nce team determined that the severity of this computer vulnerability note is medium.

The trust level is of type confirmed by the editor, with an origin of intranet client.

An attacker with a expert ability can exploit this security bulletin.

Solutions for this threat 

Siemens SIMATIC S7: solution for HTTP Requests.
The solution is indicated in information sources.
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