Multiple vulnerabilities in NETGEAR NMS300

Published: 2023-11-28 | Updated: 2024-01-03

Risk	Low
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2023-49694 CVE-2023-50231
CWE-ID	CWE-264 CWE-79
Exploitation vector	Network
Public exploit	Public exploit code for vulnerability #1 is available.
Vulnerable software	NMS300 Hardware solutions / Routers & switches, VoIP, GSM, etc
Vendor	NETGEAR

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

Updated 01.12.2023

Assigned CVE-ID number.

Updated 20.12.2023

Added vulnerability #2

Updated 03.01.2024

Assigned CVE-ID number for vulnerability #2

1) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU83528

Risk: Low

CVSSv4.0: 7.1 [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:P/U:Clear]

CVE-ID: CVE-2023-49694

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: No

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

NMS300: before 1.7.0.31

CPE2.3

cpe:2.3:h:netgear:nms300:*:*:*:*:*:*:*:*

External links

https://kb.netgear.com/000065885/Security-Advisory-for-Vertical-Privilege-Escalation-on-the-NMS300-PSV-2023-0127
https://www.tenable.com/security/research/tra-2023-39

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.

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected device in order to exploit this vulnerability.

The attacker would have to login to the system and perform certain actions in order to exploit this vulnerability.

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.

2) Stored cross-site scripting

EUVDB-ID: #VU84606

Risk: Low

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:U/U:Clear]

CVE-ID: CVE-2023-50231

CWE-ID: CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Exploit availability: No

Description

The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of user-supplied data. A remote user can inject and execute arbitrary HTML and script code in user's browser in context of vulnerable website.

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.