Remote code execution in Siemens Desigo CC and Desigo CC Compact

1) Code Injection

EUVDB-ID: #VU45632

Risk: High

CVSSv3.1: 8.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-10055

CWE-ID: CWE-94 - Improper Control of Generation of Code ('Code Injection')

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to improper input validation if the advanced reporting engine is enabled. A remote attacker can send a specially crafted request and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

This vulnerability affects the following versions:

• Desigo CC: Versions 3.x and 4.x
• Desigo CC Compact: Versions 3.x and 4.x

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Desigo CC: All versions

Desigo CC Compact: All versions

External links

http://ics-cert.us-cert.gov/advisories/icsa-20-224-06
http://cert-portal.siemens.com/productcert/pdf/ssa-786743.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 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.