Tenable Nessus Link Following Local Privilege Escalation Vulnerability
November 6th, 2023
Vulnerability Details
This vulnerability allows local attackers to escalate privileges on affected installations of Tenable Nessus. 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 configuration of OpenSSL. The process loads an OpenSSL configuration file from an unsecured location. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of SYSTEM.
Additional Details
Fixed in Nessus 10.6.2 / 10.5.6 and Nessus Agent 10.4.3
https://www.tenable.com/security/tns-2023-36
https://www.tenable.com/security/tns-2023-37
https://www.tenable.com/security/tns-2023-38
Disclosure Timeline
- 2023-10-06 - Vulnerability reported to vendor
- 2023-11-06 - Coordinated public release of advisory
Credit
Xavier DANEST - Decathlon
