#VU46521 Insufficiently protected credentials in SIMATIC S7-300 and SIMATIC S7-400 - CVE-2020-15791
Published: September 9, 2020
Vulnerability identifier: #VU46521
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2020-15791
CWE-ID: CWE-522
Exploitation vector: Adjecent network
Exploit availability:
No public exploit available
Vulnerable software:
SIMATIC S7-300
SIMATIC S7-400
SIMATIC S7-300
SIMATIC S7-400
Software vendor:
Siemens
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.
Remediation
Install updates from vendor's website.