Vulnerability identifier: #VU25267

Vulnerability risk: Medium

CVSSv3.1: 6.9 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:U/RC:C]

CVE-ID: CVE-2019-19279

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
SIPROTEC 4
Hardware solutions / Security hardware applicances
Siprotec Compact
Hardware solutions / Security hardware applicances

Vendor: Siemens

Description

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

The vulnerability exists due to insufficient validation of user-supplied input in the EN100 Ethernet communication modules. A remote attacker can send a specially crafted packets to Port 50000/UDP and cause a denial of service condition on the target system.

Mitigation
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

SIPROTEC 4: All versions

Siprotec Compact: All versions

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External links
http://ics-cert.us-cert.gov/advisories/icsa-20-042-12
http://cert-portal.siemens.com/productcert/pdf/ssa-974843.pdf

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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.