SB2020090909 - Information disclosure in Siemens SIMATIC S7-300 and S7-400 CPUs
Published: September 9, 2020
Security Bulletin ID
SB2020090909
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Adjecent network
Highest impact
Information disclosure
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Insufficiently protected credentials (CVE-ID: CVE-2020-15791)
CWE-ID: CWE-522 - Insufficiently Protected Credentials
CVSSv4: 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
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 update from vendor's website.