Denial of service in Siemens SIMATIC Software



Published: 2018-04-02
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2018-4832
CWE-ID CWE-20
Exploitation vector Network
Public exploit N/A
Vulnerable software
Subscribe
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 Runtime Professional
Server applications / SCADA systems

Siemens SIMATIC WinCC
Server applications / SCADA systems

Vendor Siemens

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Improper input validation

EUVDB-ID: #VU11448

Risk: Low

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-2018-4832

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to cause DoS condition on the target system.

The weakness exists due to improper input validation. A remote attacker can send specially crafted messages to the RPC service of the affected products and cause denial-of-service condition on the remote and local communication functionality.

Mitigation

Install update from vendor's website.

Vulnerable software versions

OpenPCS 7: 7.1 - 9.0

SIMATIC BATCH: 7.1 - 9.0

SIMATIC NET PC Software: All versions

SIMATIC PCS 7: 7.1 - 9.0

SIMATIC Route Control: 7.1 - 9.0

SIMATIC WinCC Runtime Professional: 13.0 - 14.0

Siemens SIMATIC WinCC: 7.0 - 7.4

External links

http://www.siemens.com/global/en/home/products/services/cert.html#SecurityPublications


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.



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