Advisory Details

November 6th, 2023

Tenable Nessus Link Following Local Privilege Escalation Vulnerability

CVE ID	CVE-2023-5847
CVSS SCORE	6.7, AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H
AFFECTED VENDORS	Tenable
AFFECTED PRODUCTS	Nessus
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

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