PT-2021-17380 · NetGear · Netgear Prosafe Network Management System

Rgod · Published 2021-03-26 · Updated 2021-03-30 · CVE-2021-27276

Positive Technologies (AI Summary)

CVSS v3.1

7.1

High

Base vector

AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H

Name of the Vulnerable Software and Affected Versions NETGEAR ProSAFE Network Management System version 1.6.0.26

Description This issue allows remote attackers to delete arbitrary files on affected installations, potentially creating a denial-of-service condition. Although authentication is required, the existing mechanism can be bypassed. The flaw exists within the MibController class, specifically when parsing the realName parameter, which does not properly validate user-supplied paths before using them in file operations.

Recommendations For NETGEAR ProSAFE Network Management System version 1.6.0.26, consider restricting access to the MibController class until a patch is available. As a temporary workaround, avoid using the realName parameter in file operations to minimize the risk of exploitation.

Fix

Path traversal

Weakness Enumeration

CWE-22

Related Identifiers

CVE-2021-27276

ZDI-21-359

Affected Products

Netgear Prosafe Network Management System

References · 4

• https://osv.dev/vulnerability/CVE-2021-27276 · Vendor Advisory
• https://zerodayinitiative.com/advisories/ZDI-21-359 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2021-27276 · Security Note
• https://kb.netgear.com/000062722/Security-Advisory-for-Denial-of-Service-on-NMS300-PSV-2020-0500 · Vendor Advisory