CVE-2019-17220 Cross-site scripting in n/a
Attackers can execute arbitrary scripts in user browsers via malicious URLs in Rocket.Chat, potentially leading to session hijacking.
- 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-2019-17220?
CVE-2019-17220 is a medium-severity cross-site scripting vulnerability in Rocket.chat Rocket.chat, published on 21 Oct 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
Rocket.Chat before 2.1.0 allows XSS via a URL on a ![title] line.
Weakness: CWE-79
Which versions are affected by CVE-2019-17220?
It affects 1 product.
Products include Rocket.chat Rocket.chat.
How do I fix CVE-2019-17220?
No fix has been published for CVE-2019-17220 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-2019-17220 being exploited?
There is no known exploitation of CVE-2019-17220 in the wild and no public exploit code.
Public exploit code: 1 Exploit-DB entry.
Other vulnerabilities in Rocket.chat Rocket.chat
Sources
Also known as GHSA-28c5-j9q4-w877.