Vulnerability · Published Mar 29, 2021 · Assigned by zdi

CVE-2021-27276

High 7.1

In plain English

A high-severity path traversal in ProSAFE Network Management System from NETGEAR. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 73.2% (higher than 99.5% of all known vulnerabilities).

Severity (CVSS 3.0)7.1High

Exploit odds (30 days)73.2%top 0.5% of all CVEs

Exploited in the wildNo reportsnot in CISA KEV

Attack toolingNoneno public tooling known

Official description

This vulnerability allows remote attackers to 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 MibController 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 create a denial-of-service condition on the system. Was ZDI-CAN-12122.

Affected products (as reported)

Vendor	Product	Versions
NETGEAR	ProSAFE Network Management System	1.6.0.26

Weakness: CWE-22 · Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H

References

https://kb.netgear.com/000062722/Security-Advisory-for-Denial-of-Service-on-NMS300-PSV-2020-0500 x_refsource_MISC
https://www.zerodayinitiative.com/advisories/ZDI-21-359/ x_refsource_MISC