CVE-2021-33664 Cross-site scripting in SAP NetWeaver Application Server ABAP (Applications based on Web Dynpro ABAP)

Medium 5.4 Published 9 Jun 2021 Updated 3 Aug 2024

Attackers can inject malicious scripts into Web Dynpro ABAP applications, potentially stealing user data or executing code in victim browsers.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: A user has to click or open something
Fix: None listed

What is CVE-2021-33664?

CVE-2021-33664 is a medium-severity cross-site scripting vulnerability in Sap Netweaver Application Server Abap, published on 9 Jun 2021. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

Official description

SAP NetWeaver Application Server ABAP (Applications based on Web Dynpro ABAP), versions - SAP_UI - 750,752,753,754,755, SAP_BASIS - 702, 731 does not sufficiently encode user-controlled inputs, resulting in Cross-Site Scripting (XSS) vulnerability.

Weakness: CWE-79

Which versions are affected by CVE-2021-33664?

It affects 1 product.

Products include Sap Netweaver Application Server Abap.

How do I fix CVE-2021-33664?

No fix has been published for CVE-2021-33664 yet. Limit exposure of the affected software until one is available.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2021-33664 being exploited?

There is no known exploitation of CVE-2021-33664 in the wild and no public exploit code.

All Sap Netweaver Application Server Abap vulnerabilities

Sources

Also known as GHSA-g4rm-cj97-hgg6.