Bitdefender Total Security Link Following Local Privilege Escalation Vulnerability
Vulnerability Details
This vulnerability allows local attackers to escalate privileges 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 Bitdefender Auxiliary Service. By creating a symbolic link, an attacker can abuse the service to overwrite a file. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of 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/messaging_ipc-dll-null-pointer-dereference-in-multiple-bitdefender-products-va-10017/
Disclosure Timeline
- 2021-09-08 - Vulnerability reported to vendor
- 2022-03-09 - Coordinated public release of advisory
Credit
Michael DePlante (@izobashi) of Trend Micro's Zero Day Initiative
