CVE-2019-14656 Missing authorization in n/a

High 8.8 Published Updated

Attackers can escalate privileges to admin on Yealink phones by exploiting missing role checks in HTTP POST requests.

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

What is CVE-2019-14656?

CVE-2019-14656 is a high-severity missing authorization vulnerability in n/a, published on 8 Oct 2019. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

Yealink phones through 2019-08-04 do not properly check user roles in POST requests. Consequently, the default User account (with a password of user) can make admin requests via HTTP.

Weakness: CWE-434

Which versions are affected by CVE-2019-14656?

It affects 3 products.

Products include Yeahlink T49g Firmware, Yeahlink T58v Firmware, Yeahlink Vp59 Firmware.

How do I fix CVE-2019-14656?

No fix has been published for CVE-2019-14656 yet. Limit exposure of the affected software until one is available.

Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.

Is CVE-2019-14656 being exploited?

There is no known exploitation of CVE-2019-14656 in the wild and no public exploit code.

Sources

Also known as GHSA-22wm-vgh4-2j44.

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