CVE-2021-43929 Cross-site scripting in DiskStation Manager (DSM)
Remote authenticated users can inject arbitrary web script or HTML into Synology DiskStation Manager workflow management.
- 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-2021-43929?
CVE-2021-43929 is a medium-severity cross-site scripting vulnerability in Synology Diskstation Manager, published on 7 Feb 2022. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
Improper neutralization of special elements in output used by a downstream component ('Injection') vulnerability in work flow management in Synology DiskStation Manager (DSM) before 7.0.1-42218-2 allows remote authenticated users to inject arbitrary web script or HTML via unspecified vectors.
Which versions are affected by CVE-2021-43929?
It affects 1 product.
Products include Synology Diskstation Manager.
How do I fix CVE-2021-43929?
No fix has been published for CVE-2021-43929 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-2021-43929 being exploited?
There is no known exploitation of CVE-2021-43929 in the wild and no public exploit code.
Other vulnerabilities in Synology Diskstation Manager
Sources
Also known as GHSA-g296-pch4-8795.