Vulnerability identifier: #VU86546
Vulnerability risk: Medium
CVSSv3.1: 6.9 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:U/RC:C]
CVE-ID:
CWE-ID:
CWE-940
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
SIMATIC CP 343-1
Hardware solutions /
Firmware
SIMATIC CP 343-1 LEAN
Hardware solutions /
Firmware
SIPLUS NET CP 343-1
Hardware solutions /
Firmware
SIPLUS NET CP 343-1 Lean
Hardware solutions /
Firmware
Vendor: Siemens
Description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to the affected products incorrectly validate TCP sequence numbers. A remote attacker can cause a denial of service condition on the target system.
Mitigation
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.
Vulnerable software versions
SIMATIC CP 343-1: All versions
SIMATIC CP 343-1 LEAN: All versions
SIPLUS NET CP 343-1: All versions
SIPLUS NET CP 343-1 Lean: All versions
External links
http://cert-portal.siemens.com/productcert/html/ssa-516818.html
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.