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CVE-2020-25234 Hardcoded credentials in LOGO! 8 BM (incl. SIPLUS variants)

High 7.7 Published Updated

Attackers can reverse engineer user-defined functions from LOGO! program files because password protection is only enforced by the viewer software.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Local or same network only
Victim action needed
Not needed
Fix
None listed

What is CVE-2020-25234?

CVE-2020-25234 is a high-severity vulnerability in Siemens LOGO! 8 BM (incl. SIPLUS variants), published on 14 Dec 2020. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

A vulnerability has been identified in LOGO! 8 BM (incl. SIPLUS variants) (All versions < V8.3), LOGO! Soft Comfort (All versions < V8.3). The LOGO! program files generated and used by the affected components offer the possibility to save user-defined functions (UDF) in a password protected way. This protection is implemented in the software that displays the information. An attacker could reverse engineer the UDFs directly from stored program files.

Weakness: CWE-321

Which versions are affected by CVE-2020-25234?

It affects 1 product.

Products include Siemens Logo\! 8 Bm Firmware.

How do I fix CVE-2020-25234?

No fix has been published for CVE-2020-25234 yet. Limit exposure of the affected software until one is available.

Is CVE-2020-25234 being exploited?

There is no known exploitation of CVE-2020-25234 in the wild and no public exploit code.

Sources

Also known as GHSA-66q5-93c3-xq5w.

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