Advisory Details

March 26th, 2021

NETGEAR ProSAFE Network Management System ReportTemplateController Directory Traversal Denial-of-Service Vulnerability

ZDI-21-355
ZDI-CAN-12123

CVE ID CVE-2021-27272
CVSS SCORE 7.1, (AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H)
AFFECTED VENDORS NETGEAR
AFFECTED PRODUCTS ProSAFE Network Management System
VULNERABILITY DETAILS

This vulnerability allows remote attackers to delete arbitrary files on affected installations of NETGEAR ProSAFE Network Management System. Although authentication is required to exploit this vulnerability, the existing authentication mechanism can be bypassed.

The specific flaw exists within the ReportTemplateController class. When parsing the path 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 create a denial-of-service condition on the system.

ADDITIONAL DETAILS NETGEAR has issued an update to correct this vulnerability. More details can be found at:
https://kb.netgear.com/000062723/Security-Advisory-for-Denial-of-Service-on-NMS300-PSV-2020-0537
DISCLOSURE TIMELINE
  • 2020-10-28 - Vulnerability reported to vendor
  • 2021-03-26 - Coordinated public release of advisory
CREDIT rgod
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