CVE-2021-29087 Path traversal in DiskStation Manager (DSM)
Remote attackers can write arbitrary files via path traversal in the webapi component of Synology DiskStation Manager.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-29087?
CVE-2021-29087 is a high-severity path traversal vulnerability in Synology Diskstation Manager, published on 23 Jun 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Improper limitation of a pathname to a restricted directory ('Path Traversal') vulnerability in webapi component in Synology DiskStation Manager (DSM) before 6.2.3-25426-3 allows remote attackers to write arbitrary files via unspecified vectors.
Weakness: CWE-22
Which versions are affected by CVE-2021-29087?
It affects 2 products.
Products include Synology Diskstation Manager, Synology Diskstation Manager Unified Controller.
How do I fix CVE-2021-29087?
No fix has been published for CVE-2021-29087 yet. Limit exposure of the affected software until one is available.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2021-29087 being exploited?
There is no known exploitation of CVE-2021-29087 in the wild and no public exploit code.
Other vulnerabilities in Synology Diskstation Manager
Sources
Also known as GHSA-9977-6673-28cw.