CVE-2020-8103 Link Resolution Privilege Escalation Vulnerability in Bitdefender Antivirus Free (VA-8604)
An unprivileged user can exploit improper symbolic link handling to restore quarantined files to privileged locations, leading to privilege escalation.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2020-8103?
CVE-2020-8103 is a high-severity path traversal vulnerability in Bitdefender Antivirus Free, published on 5 Jun 2020. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
A vulnerability in the improper handling of symbolic links in Bitdefender Antivirus Free can allow an unprivileged user to substitute a quarantined file, and restore it to a privileged location. This issue affects Bitdefender Antivirus Free versions prior to 1.0.17.178.
Weakness: CWE-59
Which versions are affected by CVE-2020-8103?
It affects 1 product.
Products include Bitdefender Antivirus 2020.
How do I fix CVE-2020-8103?
No fix has been published for CVE-2020-8103 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-2020-8103 being exploited?
There is no known exploitation of CVE-2020-8103 in the wild and no public exploit code.
Public exploit code: 1 proofs of concept on GitHub.
Other vulnerabilities in Bitdefender Antivirus Free
Sources
Also known as GHSA-r666-694p-fhv2.