Arbitrary code execution in Tenable Nessus



Published: 2020-11-02
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2020-5793
CWE-ID CWE-20
Exploitation vector Local
Public exploit N/A
Vulnerable software
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Tenable Nessus
Client/Desktop applications / Software for system administration

Vendor Tenable Network Security

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Input validation error

EUVDB-ID: #VU48078

Risk: Low

CVSSv3.1: 6.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-5793

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a local user to execute arbitrary code on the system.

The vulnerability exists due to insufficient validation of user-supplied input. A local user can create a malicious file, copy the file to a system directory and execute arbitrary code on the target system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Tenable Nessus: 8.0.0 - 8.12.0

External links

http://www.tenable.com/security/tns-2020-07
http://www.tenable.com/security/tns-2020-08


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.



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