CVE-2023-23857 Improper Access Control in SAP NetWeaver AS for Java

Critical 9.9 Published 14 Mar 2023 Updated 27 Feb 2025

Unauthenticated attackers can access open interfaces to read, modify sensitive data, or cause denial of service in SAP NetWeaver AS for Java.

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-2023-23857?

CVE-2023-23857 is a critical missing authorization vulnerability in SAP NetWeaver AS for Java, published on 14 Mar 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Due to missing authentication check, SAP NetWeaver AS for Java - version 7.50, allows an unauthenticated attacker to attach to an open interface and make use of an open naming and directory API to access services which can be used to perform unauthorized operations affecting users and services across systems. On a successful exploitation, the attacker can read and modify some sensitive information but can also be used to lock up any element or operation of the system making that it unresponsive or unavailable.

Weakness: CWE-287

Which versions are affected by CVE-2023-23857?

It affects 1 product.

Products include Sap Netweaver Application Server for Java.

How do I fix CVE-2023-23857?

No fix has been published for CVE-2023-23857 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-2023-23857 being exploited?

There is no known exploitation of CVE-2023-23857 in the wild and no public exploit code.

Sources

Also known as GHSA-qvvv-8vv2-8m46.