#VU76012 Missing Standardized Error Handling Mechanism in SIMATIC Cloud Connect 7 CC712 and SIMATIC Cloud Connect 7 CC716 - CVE-2023-29105

Vulnerability identifier: #VU76012

Vulnerability risk: Medium

CVSSv4.0: [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2023-29105

CWE-ID: CWE-544

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
SIMATIC Cloud Connect 7 CC712
Other software / Other software solutions
SIMATIC Cloud Connect 7 CC716
Other software / Other software solutions

Vendor:

Description

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

The vulnerability exists due to missing standardized error handling mechanism while parsing a random (non-JSON) MQTT payload. A remote attacker can manipulate the communication between the MQTT broker and the affected device and perform a denial of service (DoS) attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

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External links
http://cert-portal.siemens.com/productcert/pdf/ssa-555292.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.