CVE-2021-21489 Cross-site scripting in SAP NetWeaver Enterprise Portal

Medium 4.8 Published 14 Sep 2021 Updated 3 Aug 2024

An attacker with admin privileges can inject malicious scripts into the SAP NetWeaver Enterprise Portal, compromising user data confidentiality and integrity.

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

What is CVE-2021-21489?

CVE-2021-21489 is a medium-severity cross-site scripting vulnerability in SAP NetWeaver Enterprise Portal, published on 14 Sep 2021. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.

Official description

SAP NetWeaver Enterprise Portal versions - 7.10, 7.11, 7.20, 7.30, 7.31, 7.40, 7.50, does not sufficiently encode user related data, resulting in Stored Cross-Site Scripting (XSS) vulnerability. This would allow an attacker with administrative privileges to store a malicious script on the portal. The execution of the script content by a victim registered on the portal could compromise the confidentiality and integrity of portal content.

Weakness: CWE-79

Which versions are affected by CVE-2021-21489?

It affects 1 product.

Products include Sap Netweaver Enterprise Portal.

How do I fix CVE-2021-21489?

No fix has been published for CVE-2021-21489 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-2021-21489 being exploited?

There is no known exploitation of CVE-2021-21489 in the wild and no public exploit code.

Sources

Also known as GHSA-7chv-w23j-556x.