Denial of service in Siemens SIMATIC PCS 7, SIMATIC WinCC, and SIMATIC NET PC

1) Buffer overflow

EUVDB-ID: #VU25259

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 - Memory corruption

Exploit availability: No

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

External links

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

Q & A

Can this vulnerability be exploited remotely?

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

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

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