Tenable Nessus Network Monitor update for third-party components

1) Cryptographic issues

EUVDB-ID: #VU82349

Risk: Low

CVSSv4.0: 1.7 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2023-5363

CWE-ID: CWE-310 - Cryptographic Issues

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to sensitive information.

The vulnerability exists due to an error when processing key and initialisation vector lengths in EVP_EncryptInit_ex2(), EVP_DecryptInit_ex2() and EVP_CipherInit_ex2() function. A remote attacker can gain access to potentially sensitive information.

The following ciphers and cipher modes are impacted: RC2, RC4, RC5, CCM, GCM and OCB.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Nessus Network Monitor: 6.0.0 - 6.3.0

CPE2.3

• cpe:2.3:a:tenable_network_security:nessus_network_monitor:6.0.0:*:*:*:*:*:*:*
• cpe:2.3:a:tenable_network_security:nessus_network_monitor:6.0.1:*:*:*:*:*:*:*
• cpe:2.3:a:tenable_network_security:nessus_network_monitor:6.1.0:*:*:*:*:*:*:*

External links

https://www.tenable.com/security/tns-2023-43

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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

2) Code Injection

EUVDB-ID: #VU50896

Risk: High

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2021-23369

CWE-ID: CWE-94 - Improper Control of Generation of Code ('Code Injection')

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to improper input validation. A remote attacker can send a specially crafted request and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Nessus Network Monitor: 6.0.0 - 6.3.0

CPE2.3

• cpe:2.3:a:tenable_network_security:nessus_network_monitor:6.0.0:*:*:*:*:*:*:*
• cpe:2.3:a:tenable_network_security:nessus_network_monitor:6.0.1:*:*:*:*:*:*:*
• cpe:2.3:a:tenable_network_security:nessus_network_monitor:6.1.0:*:*:*:*:*:*:*

External links

https://www.tenable.com/security/tns-2023-43

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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

3) Prototype Pollution

EUVDB-ID: #VU53013

Risk: High

CVSSv4.0: 8.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Amber]

CVE-ID: CVE-2021-23383

CWE-ID: CWE-94 - Improper Control of Generation of Code ('Code Injection')

Exploit availability: Yes

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to improper input validation when selecting certain compiling options to compile templates. A remote attacker can execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Nessus Network Monitor: 6.0.0 - 6.3.0

CPE2.3

• cpe:2.3:a:tenable_network_security:nessus_network_monitor:6.0.0:*:*:*:*:*:*:*
• cpe:2.3:a:tenable_network_security:nessus_network_monitor:6.0.1:*:*:*:*:*:*:*
• cpe:2.3:a:tenable_network_security:nessus_network_monitor:6.1.0:*:*:*:*:*:*:*

External links

https://www.tenable.com/security/tns-2023-43

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.

4) Arbitrary file upload

EUVDB-ID: #VU15424

Risk: Critical

CVSSv4.0: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:A/U:Red]

CVE-ID: CVE-2018-9206

CWE-ID: CWE-434 - Unrestricted Upload of File with Dangerous Type

Exploit availability: Yes

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists in the plugin's source code that handles file uploads to PHP servers due to software allows upload of arbitrary files to the system. A remote unauthenticated attacker can upload arbitrary .htaccess file to impose security restrictions to its upload folder and upload backdoors and web shells.

Note: The vulnerability has been actively exploited for at least 3 years.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Nessus Network Monitor: 6.0.0 - 6.3.0

CPE2.3

• cpe:2.3:a:tenable_network_security:nessus_network_monitor:6.0.0:*:*:*:*:*:*:*
• cpe:2.3:a:tenable_network_security:nessus_network_monitor:6.0.1:*:*:*:*:*:*:*
• cpe:2.3:a:tenable_network_security:nessus_network_monitor:6.1.0:*:*:*:*:*:*:*

External links

https://www.tenable.com/security/tns-2023-43

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

Yes. This vulnerability is being exploited in the wild.