CVE-2021-20366 Cross-site scripting in Cloud Pak for Applications

Medium 5.4 Published Updated

Attackers can inject JavaScript into the IBM Cloud Pak for Applications web interface to steal user credentials and alter functionality.

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-2021-20366?

CVE-2021-20366 is a medium-severity cross-site scripting vulnerability in IBM Cloud Pak for Applications, published on 13 Jul 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

IBM Cloud Pak for Applications 4.3 is vulnerable to cross-site scripting. This vulnerability allows users to embed arbitrary JavaScript code in the Web UI thus altering the intended functionality potentially leading to credentials disclosure within a trusted session. IBM X-Force ID: 195037.

Weakness: CWE-79

Which versions are affected by CVE-2021-20366?

It affects 1 product.

Products include Ibm Cloud Pak for Applications.

How do I fix CVE-2021-20366?

No fix has been published for CVE-2021-20366 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-2021-20366 being exploited?

There is no known exploitation of CVE-2021-20366 in the wild and no public exploit code.

Sources

Also known as GHSA-743v-8938-x3xv.

Is CVE-2021-20366 in your software?

Upload an SBOM and sbomify checks it against every vulnerability here, every day.

Check your SBOMs for free