Denial of service in Siemens Industrial Products

1) Buffer overflow

EUVDB-ID: #VU63312

Risk: Medium

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-2021-40142

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

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

The vulnerability exists due to a boundary error. A remote attacker can send a specially crafted message, trigger memory corruption and cause a denial of service condition on the target system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

TeleControl Server Basic: 3

SIMATIC WinCC Unified Scada Runtime: All versions

SIMATIC NET PC Software: 14 - 17

SIMATIC WinCC Runtime Professional: All versions

Siemens SIMATIC WinCC: All versions

SIMATIC Process Historian OPC UA Server: before 14 SP1 Update 14

External links

http://cert-portal.siemens.com/productcert/txt/ssa-321292.txt

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.