CVE-2022-22543 Denial of service in SAP NetWeaver Application Server for ABAP (Kernel) and ABAP Platform (Kernel)

High 7.5 Published 9 Feb 2022 Updated 3 Aug 2024

An unauthorized remote user can cause a Denial-of-Service by exploiting insufficient validation of sap-passport information in the SAP NetWeaver Kernel.

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-2022-22543?

CVE-2022-22543 is a high-severity denial of service vulnerability in SAP NetWeaver Application Server for ABAP (Kernel) and ABAP Platform (Kernel), published on 9 Feb 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

SAP NetWeaver Application Server for ABAP (Kernel) and ABAP Platform (Kernel) - versions KERNEL 7.22, 8.04, 7.49, 7.53, 7.77, 7.81, 7.85, 7.86, 7.87, KRNL64UC 8.04, 7.22, 7.22EXT, 7.49, 7.53, KRNL64NUC 7.22, 7.22EXT, 7.49, does not sufficiently validate sap-passport information, which could lead to a Denial-of-Service attack. This allows an unauthorized remote user to provoke a breakdown of the SAP Web Dispatcher or Kernel work process. The crashed process can be restarted immediately, other processes are not affected.

Weakness: CWE-400

Which versions are affected by CVE-2022-22543?

It affects 2 products.

Products include Sap Netweaver Abap, Sap Netweaver as Abap.

How do I fix CVE-2022-22543?

No fix has been published for CVE-2022-22543 yet. Limit exposure of the affected software until one is available.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2022-22543 being exploited?

There is no known exploitation of CVE-2022-22543 in the wild and no public exploit code.

Sources

Also known as GHSA-rmj9-w393-hxwf.