CVE-2020-10103 Cross-site scripting in n/a
A low-privileged user can inject malicious JavaScript via file uploads, leading to code execution in the browsers of other users.
- 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-2020-10103?
CVE-2020-10103 is a medium-severity cross-site scripting vulnerability in Zammad Zammad, published on 5 Mar 2020. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
An XSS issue was discovered in Zammad 3.0 through 3.2. Malicious code can be provided by a low-privileged user through the File Upload functionality in Zammad. The malicious JavaScript will execute within the browser of any user who opens a specially crafted link to the uploaded file with an active Zammad session.
Weakness: CWE-79
Which versions are affected by CVE-2020-10103?
It affects 1 product.
Products include Zammad Zammad.
How do I fix CVE-2020-10103?
No fix has been published for CVE-2020-10103 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-2020-10103 being exploited?
There is no known exploitation of CVE-2020-10103 in the wild and no public exploit code.
Other vulnerabilities in Zammad Zammad
Sources
Also known as GHSA-59q5-crp9-8r37.