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Vulnerability of SIMATIC: denial of service via VxWorks SegmentSmack

Synthesis of the vulnerability 

An attacker can trigger a fatal error via VxWorks SegmentSmack of SIMATIC, in order to trigger a denial of service.
Vulnerable software: SIMATIC.
Severity of this announce: 2/4.
Creation date: 14/04/2020.
Références of this computer vulnerability: CERTFR-2020-AVI-207, CVE-2019-19301, SSA-102233, VIGILANCE-VUL-32023.

Description of the vulnerability 

An attacker can trigger a fatal error via VxWorks SegmentSmack of SIMATIC, in order to trigger a denial of service.
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This computer vulnerability alert impacts software or systems such as SIMATIC.

Our Vigil@nce team determined that the severity of this computer threat alert 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 vulnerability.

Solutions for this threat 

SIMATIC: fixed versions for VxWorks SegmentSmack.
Fixed versions are indicated in information sources.
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