CVE-2021-27275 Path traversal in ProSAFE Network Management System

High 8.3 Published Updated

Remote attackers can bypass authentication to disclose sensitive information or delete arbitrary files via path traversal in NETGEAR ProSAFE NMS.

Exploited in the wild
Not known
Login needed
Any signed-in user
Attackable
Over the internet
Victim action needed
Not needed
Fix
None listed

What is CVE-2021-27275?

CVE-2021-27275 is a high-severity path traversal vulnerability in NETGEAR ProSAFE Network Management System, published on 29 Mar 2021. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

This vulnerability allows remote attackers to disclose sensitive information and delete arbitrary files on affected installations of NETGEAR ProSAFE Network Management System 1.6.0.26. Although authentication is required to exploit this vulnerability, the existing authentication mechanism can be bypassed. The specific flaw exists within the ConfigFileController class. When parsing the realName parameter, the process does not properly validate a user-supplied path prior to using it in file operations. An attacker can leverage this vulnerability to disclose sensitive information or to create a denial-of-service condition on the system. Was ZDI-CAN-12125.

Weakness: CWE-22

Which versions are affected by CVE-2021-27275?

It affects 1 product.

Products include Netgear Prosafe Network Management System.

How do I fix CVE-2021-27275?

No fix has been published for CVE-2021-27275 yet. Limit exposure of the affected software until one is available.

Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.

Is CVE-2021-27275 being exploited?

There is no known exploitation of CVE-2021-27275 in the wild and no public exploit code.

Sources

Also known as GHSA-4gvg-m5r5-42mj.

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