CVE-2020-35757 Auth bypass in n/a

Critical 9.8 Published Updated

Unauthenticated attackers can enable root ADB access via the web interface, gaining full control of Libre Wireless LS9 devices.

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-2020-35757?

CVE-2020-35757 is a critical authentication bypass vulnerability in n/a, published on 3 May 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

An issue was discovered on Libre Wireless LS9 LS1.5/p7040 devices. There is Unauthenticated Root ADB Access Over TCP. The LS9 web interface provides functionality to access ADB over TCP. This is not enabled by default, but can be enabled by sending a crafted request to a web management interface endpoint. Requests made to this endpoint do not require authentication. As such, any unauthenticated user who is able to access the web interface will be able to gain root privileges on the LS9 module.

Weakness: CWE-306

Which versions are affected by CVE-2020-35757?

It affects 1 product.

Products include Librewireless Ls9 Firmware.

How do I fix CVE-2020-35757?

No fix has been published for CVE-2020-35757 yet. Limit exposure of the affected software until one is available.

Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.

Is CVE-2020-35757 being exploited?

There is no known exploitation of CVE-2020-35757 in the wild and no public exploit code.

Sources

Also known as GHSA-xjfq-jvgm-jj7p.

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