CVE-2021-3823 Path traversal vulnerability in Bitdefender GravitZone Update Server in relay mode
An attacker can execute arbitrary code on Bitdefender GravityZone Update Server instances running in relay mode via a path traversal vulnerability.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-3823?
CVE-2021-3823 is a high-severity path traversal vulnerability in Bitdefender GravityZone Update Server, published on 28 Oct 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') vulnerability in the UpdateServer component of Bitdefender GravityZone allows an attacker to execute arbitrary code on vulnerable instances. This issue affects: Bitdefender GravityZone versions prior to 3.3.8.249.
Weakness: CWE-22
Which versions are affected by CVE-2021-3823?
It affects 1 product.
Products include Bitdefender Gravityzone.
How do I fix CVE-2021-3823?
No fix has been published for CVE-2021-3823 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-2021-3823 being exploited?
There is no known exploitation of CVE-2021-3823 in the wild and no public exploit code.
Other vulnerabilities in Bitdefender GravityZone Update Server
- CVE-2017-8931 Privilege escalation in n/a
- CVE-2018-8955 Code injection in n/a
- CVE-2025-2244 Insecure PHP deserialization issue in GravityZone Console (VA-12634)
- CVE-2024-6980 Verbose error handling issue in GravityZone Update Server proxy service
- CVE-2022-2830 Deserialization of Untrusted Data in GravityZone Console On-Premise (VA-10573)
Sources
Also known as GHSA-pv3r-p93c-qvjx.