#VU54452 Permissions, Privileges, and Access Controls in Nessus Agent - CVE-2021-20099

Vulnerability identifier: #VU54452

Vulnerability risk: Low

CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2021-20099

CWE-ID: CWE-264

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Nessus Agent
Client/Desktop applications / Other client software

Vendor: Tenable Network Security

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to application does not properly impose security restrictions, which leads to security restrictions bypass and privilege escalation.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Nessus Agent: 8.0.0 - 8.2.4

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External links
https://www.tenable.com/security/tns-2021-12

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.