Privilege escalation in Nessus Agent
| Risk | Low |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2021-20106 |
| CWE-ID | CWE-434 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software Subscribe |
Nessus Agent Client/Desktop applications / Other client software |
| Vendor | Tenable Network Security |
Security Bulletin
This security bulletin contains one low risk vulnerability.
1) Arbitrary file upload
EUVDB-ID: #VU54451
Risk: Low
CVSSv3.1: 6.3 [CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2021-20106
CWE-ID:
CWE-434 - Unrestricted Upload of File with Dangerous Type
Exploit availability: No
DescriptionThe vulnerability allows a remote user to compromise vulnerable system.
The vulnerability exists due to insufficient validation of file during file upload. A remote Nessus administrator user can upload a malicious file and escalate privileges on the system.
Install updates from vendor's website.
Vulnerable software versionsNessus Agent: 8.0.0 - 8.2.5
External linkshttp://www.tenable.com/security/tns-2021-13
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote authenticated privileged user via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
