#VU28932 Missing Authentication for Critical Function in LOGO!8 BM - CVE-2020-7589
Published: June 10, 2020 / Updated: June 10, 2020
Vulnerability identifier: #VU28932
Vulnerability risk: High
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2020-7589
CWE-ID: CWE-306
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
LOGO!8 BM
LOGO!8 BM
Software vendor:
Siemens
Siemens
Description
The vulnerability allows a remote attacker to bypass authentication checks.
The vulneability exists due to the affected product is missing authentication in the TDE service functionality in "NFSAccess" and "DELETEPROG" functions. A remote attacker with access to Port 135/TCP can read and modify the device configuration and obtain project files from the devices.
Remediation
Install updates from vendor's website.
External links
- https://ics-cert.us-cert.gov/advisories/icsa-20-161-03
- https://cert-portal.siemens.com/productcert/pdf/ssa-817401.pdf
- https://talosintelligence.com/vulnerability_reports/TALOS-2020-1026
- https://talosintelligence.com/vulnerability_reports/TALOS-2020-1025
- https://talosintelligence.com/vulnerability_reports/TALOS-2020-1024