CVE-2018-8921 Cross-site scripting in Drive
Remote authenticated users can inject arbitrary web script or HTML via malicious file names in Synology Drive.
- 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-2018-8921?
CVE-2018-8921 is a medium-severity cross-site scripting vulnerability in Synology Drive, published on 1 Jun 2018. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
Cross-site scripting (XSS) vulnerability in File Sharing Notify Toast in Synology Drive before 1.0.2-10275 allows remote authenticated users to inject arbitrary web script or HTML via the malicious file name.
Weakness: CWE-79
Which versions are affected by CVE-2018-8921?
It affects 1 product.
Products include Synology Drive Server.
How do I fix CVE-2018-8921?
No fix has been published for CVE-2018-8921 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-2018-8921 being exploited?
There is no known exploitation of CVE-2018-8921 in the wild and no public exploit code.
Other vulnerabilities in Synology Drive
Sources
Also known as GHSA-56rc-gpxm-rv3v.