CVE-2019-9580 Cross-site scripting in n/a

Medium 6.1 Published Updated

Attackers can bypass CORS protection using a null origin to execute cross-site scripting attacks in the StackStorm Web UI.

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

What is CVE-2019-9580?

CVE-2019-9580 is a medium-severity cross-site scripting vulnerability in n/a, published on 9 Mar 2019. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

In st2web in StackStorm Web UI before 2.9.3 and 2.10.x before 2.10.3, it is possible to bypass the CORS protection mechanism via a "null" origin value, potentially leading to XSS.

Weakness: CWE-79

Which versions are affected by CVE-2019-9580?

It affects 1 product.

Products include Stackstorm Stackstorm.

How do I fix CVE-2019-9580?

No fix has been published for CVE-2019-9580 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-2019-9580 being exploited?

There is no known exploitation of CVE-2019-9580 in the wild and no public exploit code.

Public exploit code: 1 proofs of concept on GitHub.

Sources

Also known as GHSA-v3xf-5q99-hxf5.

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