CVE-2017-16689 Auth bypass in Trusted RFC connection

High 8.8 Published 12 Dec 2017 Updated 17 Sep 2024

Attackers can establish trusted RFC connections to unauthorized clients or users, bypassing authentication controls in SAP Kernel.

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-2017-16689?

CVE-2017-16689 is a high-severity authentication bypass vulnerability in SAP Trusted RFC connection, published on 12 Dec 2017. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

A Trusted RFC connection in SAP KERNEL 32NUC, SAP KERNEL 32Unicode, SAP KERNEL 64NUC, SAP KERNEL 64Unicode 7.21, 7.21EXT, 7.22, 7.22EXT; SAP KERNEL from 7.21 to 7.22, 7.45, 7.49, can be established to a different client or a different user on the same system, although no explicit Trusted/Trusting Relation to the same system has been defined.

Weakness: CWE-287

Which versions are affected by CVE-2017-16689?

It affects 1 product.

Products include Sap Sap Kernel.

How do I fix CVE-2017-16689?

No fix has been published for CVE-2017-16689 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-2017-16689 being exploited?

There is no known exploitation of CVE-2017-16689 in the wild and no public exploit code.

Sources

Also known as GHSA-crwv-5x5f-fc2f.