16 May 2019

KLCERT-19-027: Remote Code Execution Vulnerability in Siemens SIMATIC WinCC and SIMATIC PCS 7

Timeline

Timeline

  • Kaspersky ICS CERT advisory published

    15 May 2019

  • Vendor advisory published

    May 2019

  • Vulnerability patched

    May 2019

  • Vendor confirmation

    December 2018

  • Vulnerability reported

    December 2018

Description

An attacker with network access to affected installations, which are configured without “Encrypted Communication”, can execute arbitrary code.

The security vulnerability could be exploited by an unauthenticated attacker with network access to the affected installation. No user interaction is required to exploit this security vulnerability. The vulnerability impacts confidentiality, integrity, and availability of the device.


Exploitability

Remotely

Attack complexity

Low

User interaction

None

Impact

Successful exploitation of this vulnerability could allow an attacker to execute arbitrary code.

Existence of exploit

Unknown

Affected products

SIMATIC PCS 7 V8.0 and earlier:All versions
SIMATIC PCS 7 V8.1 and newer: All versions
SIMATIC WinCC V7.2 and earlier: All versions
SIMATIC WinCC V7.3 and newer: All versions

Mitigation

Vendor mitigation

Upgrade to a newer version and enable “Encrypted Communication”.

Apply Defense-in-Depth concept.

Kaspersky Lab publishes information on newly identified vulnerabilities in order to raise user awareness of the IT security threats detected. Kaspersky Lab does not make any guarantees in respect of information received from vendors of products in which vulnerabilities have been identified, which is included in the following sections of the advisory: Affected Products, Vendor Mitigation.

Timeline

  • Kaspersky ICS CERT advisory published

    15 May 2019

  • Vendor advisory published

    May 2019

  • Vulnerability patched

    May 2019

  • Vendor confirmation

    December 2018

  • Vulnerability reported

    December 2018