Vulnerability identifier: #VU25266
Vulnerability 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:
CWE-ID:
CWE-400
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
SIMATIC ET 200SP Open Controller CPU 1515SP PC2
Server applications /
SCADA systems
SIMATIC S7-1500 Software Controller
Server applications /
SCADA systems
SIMATIC S7-1500 CPU
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 uncontrolled resource consumption. A remote attacker can send a specially crafted UDP packets, trigger resource exhaustion and perform a denial of service (DoS) attack.
Mitigation
Install updates from vendor's website.
Vulnerable software versions
SIMATIC ET 200SP Open Controller CPU 1515SP PC2: All versions
SIMATIC S7-1500 CPU: 2.5
SIMATIC S7-1500 Software Controller: 2.5
External links
http://ics-cert.us-cert.gov/advisories/icsa-20-042-11
http://cert-portal.siemens.com/productcert/pdf/ssa-750824.pdf
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.