CVE-2017-5621 Cross-site scripting in n/a
Attackers can inject malicious HTML into chat messages or ticket articles via APIs, leading to cross-site scripting attacks in Zammad.
- 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-2017-5621?
CVE-2017-5621 is a medium-severity cross-site scripting vulnerability in Zammad Zammad, published on 13 Mar 2017. 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
An issue was discovered in Zammad before 1.0.4, 1.1.x before 1.1.3, and 1.2.x before 1.2.1. XSS can be triggered via malicious HTML in a chat message or the content of a ticket article, when using either the REST API or the WebSocket API.
Weakness: CWE-79
Which versions are affected by CVE-2017-5621?
It affects 1 product.
Products include Zammad Zammad.
How do I fix CVE-2017-5621?
No fix has been published for CVE-2017-5621 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-2017-5621 being exploited?
There is no known exploitation of CVE-2017-5621 in the wild and no public exploit code.
Other vulnerabilities in Zammad Zammad
Sources
Also known as GHSA-8vqf-3cg3-mcvj.