Denial of service in Siemens SCALANCE and SIMATIC



Published: 2020-04-15
Risk Medium
Patch available NO
Number of vulnerabilities 1
CVE-ID CVE-2019-19301
CWE-ID CWE-400
Exploitation vector Network
Public exploit N/A
Vulnerable software
Subscribe
SCALANCE X-200
Hardware solutions / Routers & switches, VoIP, GSM, etc

SCALANCE X-200 IRT
Hardware solutions / Routers & switches, VoIP, GSM, etc

SCALANCE X-300
Hardware solutions / Routers & switches, VoIP, GSM, etc

SIMATIC RF180C
Hardware solutions / Routers & switches, VoIP, GSM, etc

SIMATIC RF182C
Hardware solutions / Routers & switches, VoIP, GSM, etc

SIMATIC CP 443-1 Standard
Server applications / SCADA systems

SIMATIC CP 443-1 Advanced
Server applications / SCADA systems

Vendor Siemens

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Resource exhaustion

EUVDB-ID: #VU26963

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-2019-19301

CWE-ID: CWE-400 - Resource exhaustion

Exploit availability: No

Description

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

The vulnerability exists due to the VxWorks-based Profinet TCP stack can be forced to make resource-intense calls for every incoming packet. A remote attacker can trigger resource exhaustion and perform a denial of service (DoS) attack.

Mitigation

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

Vulnerable software versions

SCALANCE X-200: All versions

SCALANCE X-200 IRT: All versions

SCALANCE X-300: All versions

SIMATIC CP 443-1 Standard: All versions

SIMATIC CP 443-1 Advanced: All versions

SIMATIC RF180C: All versions

SIMATIC RF182C: All versions

External links

http://cert-portal.siemens.com/productcert/pdf/ssa-102233.pdf


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 device in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

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



###SIDEBAR###