Vulnerability identifier: #VU46521
Vulnerability risk: Low
CVSSv3.1: 4.6 [CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-522
Exploitation vector: Local network
Exploit availability: No
Vulnerable software:
SIMATIC S7-300
Hardware solutions /
Firmware
SIMATIC S7-400
Hardware solutions /
Firmware
Vendor: Siemens
Description
The vulnerability allows a remote attacker to gain access to sensitive information on the system.
The vulnerability exists due to the authentication protocol between a client and a PLC via Port 102/TCP (ISO-TSAP) insufficiently protects the transmitted password. A remote attacker on the local network can obtain valid PLC credentials.
Mitigation
Install updates from vendor's website.
Vulnerable software versions
SIMATIC S7-300: All versions
SIMATIC S7-400: All versions
External links
http://ics-cert.us-cert.gov/advisories/icsa-20-252-02
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.