CVE-2020-35561 SSRF in variuos products of MB connect line and Helmholz

Medium 5.3 Published 16 Feb 2021 Updated 16 Sep 2024

Unauthenticated attackers can exploit an SSRF vulnerability in the HA module to scan for open ports on internal networks.

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-2020-35561?

CVE-2020-35561 is a medium-severity server-side request forgery vulnerability in n/a, published on 16 Feb 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

An issue was discovered MB connect line mymbCONNECT24, mbCONNECT24 and Helmholz myREX24 and myREX24.virtual in all versions through v2.11.2. There is an SSRF in the HA module allowing an unauthenticated attacker to scan for open ports.

Weakness: CWE-918

Which versions are affected by CVE-2020-35561?

It affects 4 products.

Products include Helmholz Myrex24, Helmholz Myrex24.virtual, Mbconnectline Mbconnect24, Mbconnectline Mymbconnect24.

How do I fix CVE-2020-35561?

No fix has been published for CVE-2020-35561 yet. Limit exposure of the affected software until one is available.

Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.

Is CVE-2020-35561 being exploited?

There is no known exploitation of CVE-2020-35561 in the wild and no public exploit code.

Sources

Also known as GHSA-44gj-57cg-mxj8.