Vulnerability identifier: #VU25259

Vulnerability risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-19282

CWE-ID: CWE-119

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
OpenPCS 7
Server applications / SCADA systems
SIMATIC BATCH
Server applications / SCADA systems
SIMATIC NET PC Software
Server applications / SCADA systems
SIMATIC PCS 7
Server applications / SCADA systems
SIMATIC Route Control
Server applications / SCADA systems
SIMATIC WinCC (TIA Portal)
Server applications / SCADA systems
Siemens SIMATIC WinCC
Server applications / SCADA systems

Vendor: Siemens

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary error when processing messages. A remote attacker can send a specially crafted messages, trigger memory corruption and cause a denial of service condition on the target system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

OpenPCS 7: 8.1 - 9.0

SIMATIC BATCH: 8.1 - 9.0

SIMATIC NET PC Software: All versions

SIMATIC PCS 7: 8.1 - 9.0

SIMATIC Route Control: 8.1 - 9.0

SIMATIC WinCC (TIA Portal): 13.0 - 16.0

Siemens SIMATIC WinCC: 7.3 - 7.5

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External links
http://ics-cert.us-cert.gov/advisories/icsa-20-042-06

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.