CVE-2021-27601 Cross-site scripting in SAP NetWeaver AS for Java (Applications based on HTMLB for Java)
An authorized attacker can store malicious files leading to Cross-Site Scripting, allowing data reading and modification when victims open the files.
- 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-2021-27601?
CVE-2021-27601 is a medium-severity cross-site scripting vulnerability in Sap Netweaver Application Server Java, published on 13 Apr 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 AS Java (Applications based on HTMLB for Java) allows a basic-level authorized attacker to store a malicious file on the server. When a victim tries to open this file, it results in a Cross-Site Scripting (XSS) vulnerability and the attacker can read and modify data. However, the attacker does not have control over kind or degree.
Weakness: CWE-79
Which versions are affected by CVE-2021-27601?
It affects 1 product.
Products include Sap Netweaver Application Server Java.
How do I fix CVE-2021-27601?
No fix has been published for CVE-2021-27601 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-2021-27601 being exploited?
There is no known exploitation of CVE-2021-27601 in the wild and no public exploit code.
Other vulnerabilities in Sap Netweaver Application Server Java
Sources
Also known as GHSA-hfcm-37qj-j7cf.