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CVE-2020-25232 Weak cryptography in LOGO! 8 BM (incl. SIPLUS variants)

High 7.5 Published Updated

Attackers can extract communication keys from Siemens LOGO! 8 BM devices due to insecure random number generation and deprecated cryptography.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
Not needed
Fix
None listed

What is CVE-2020-25232?

CVE-2020-25232 is a high-severity vulnerability in Siemens LOGO! 8 BM (incl. SIPLUS variants), published on 14 Dec 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

A vulnerability has been identified in LOGO! 8 BM (incl. SIPLUS variants) (All versions < V8.3). Due to the usage of an insecure random number generation function and a deprecated cryptographic function, an attacker could extract the key that is used when communicating with an affected device on port 8080/tcp.

Weakness: CWE-327

Which versions are affected by CVE-2020-25232?

It affects 1 product.

Products include Siemens Logo\! 8 Bm Firmware.

How do I fix CVE-2020-25232?

No fix has been published for CVE-2020-25232 yet. Limit exposure of the affected software until one is available.

Is CVE-2020-25232 being exploited?

There is no known exploitation of CVE-2020-25232 in the wild and no public exploit code.

Sources

Also known as GHSA-5fx7-6vcj-vqfc.

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