Tenable Nessus Network Monitor update for third-party components
| Risk | High |
| Patch available | YES |
| Number of vulnerabilities | 4 |
| CVE-ID | CVE-2023-5363 CVE-2021-23369 CVE-2021-23383 CVE-2018-9206 |
| CWE-ID | CWE-310 CWE-94 CWE-434 |
| Exploitation vector | Network |
| Public exploit |
Public exploit code for vulnerability #3 is available. Vulnerability #4 is being exploited in the wild. |
| Vulnerable software Subscribe |
Nessus Network Monitor Client/Desktop applications / Software for system administration |
| Vendor | Tenable Network Security |
Security Bulletin
This security bulletin contains information about 4 vulnerabilities.
1) Cryptographic issues
EUVDB-ID: #VU82349
Risk: Low
CVSSv3.1: 3.2 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2023-5363
CWE-ID:
CWE-310 - Cryptographic Issues
Exploit availability: No
DescriptionThe 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.
Install update from vendor's website.
Vulnerable software versionsNessus Network Monitor: 6.0.0 - 6.3.0
External linkshttp://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
CVSSv3.1: 8.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2021-23369
CWE-ID:
CWE-94 - Improper Control of Generation of Code ('Code Injection')
Exploit availability: No
DescriptionThe 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.
MitigationInstall update from vendor's website.
Vulnerable software versionsNessus Network Monitor: 6.0.0 - 6.3.0
External linkshttp://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
CVSSv3.1: 7.3 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C]
CVE-ID: CVE-2021-23383
CWE-ID:
CWE-94 - Improper Control of Generation of Code ('Code Injection')
Exploit availability: Yes
DescriptionThe 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.
MitigationInstall update from vendor's website.
Vulnerable software versionsNessus Network Monitor: 6.0.0 - 6.3.0
External linkshttp://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
CVSSv3.1: 9.4 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:H/RL:O/RC:C]
CVE-ID: CVE-2018-9206
CWE-ID:
CWE-434 - Unrestricted Upload of File with Dangerous Type
Exploit availability: Yes
DescriptionThe 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 versionsNessus Network Monitor: 6.0.0 - 6.3.0
External linkshttp://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.
