Bitdefender Total Security Link Resolution Denial-of-Service Vulnerability

February 5th, 2020

Vulnerability Details

This vulnerability allows local attackers to create a denial-of-service condition on affected installations of BitDefender Total Security. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability.

The specific flaw exists within the handling of junctions. By creating a junction, an attacker can abuse the service to delete arbitrary files. An attacker can leverage this vulnerability to create a denial-of-service condition on the system.

Additional Details

Bitdefender has issued an update to correct this vulnerability. More details can be found at:
https://www.bitdefender.com/support/security-advisories/bitdefender-total-security-link-resolution-denial-service-vulnerability-va-4021/

Disclosure Timeline

  • 2019-08-29 - Vulnerability reported to vendor
  • 2020-02-05 - Coordinated public release of advisory

Credit

Nabeel Ahmed of Dimension Data Belgium

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