Denial of service in Siemens Industrial Products

1) Buffer overflow

EUVDB-ID: #VU63312

Risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

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

CPE2.3

• cpe:2.3:a:siemens:telecontrol_server_basic:3:*:*:*:*:*:*:*
• cpe:2.3:a:siemens:simatic_wincc_unified_scada_runtime:*:*:*:*:*:*:*:*
• cpe:2.3:a:siemens:simatic_net_pc_software:14:*:*:*:*:*:*:*
• cpe:2.3:a:siemens:simatic_net_pc_software:15:*:*:*:*:*:*:*
• cpe:2.3:a:siemens:simatic_net_pc_software:16:*:*:*:*:*:*:*
• cpe:2.3:a:siemens:simatic_wincc_runtime_professional:*:*:*:*:*:*:*:*
• cpe:2.3:a:siemens:siemens_simatic_wincc:*:*:*:*:*:*:*:*
• cpe:2.3:a:siemens:simatic_process_historian_opc_ua_server:*:*:*:*:*:*:*:*

External links

https://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.