Path traversal in NETGEAR Routers and Orbi WiFi Systems

1) Path traversal

EUVDB-ID: #VU61584

Risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2011-5325

CWE-ID: CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform directory traversal attacks.

The vulnerability exists due to input validation error when processing directory traversal sequences in the BusyBox implementation of tar. A remote attacker can trick pass specially crafted tar archive to the application and overwrite files outside the current working directory via a symlink.

Mitigation

Install update from vendor's website.

Vulnerable software versions

R7000P: All versions

CBR40: All versions

RS400: All versions

R7000: All versions

R6900P: All versions

R6700v3: All versions

R6400v2: All versions

CPE2.3

• cpe:2.3:h:netgear:r7000p:*:*:*:*:*:*:*:*
• cpe:2.3:h:netgear:cbr40:*:*:*:*:*:*:*:*
• cpe:2.3:h:netgear:rs400:*:*:*:*:*:*:*:*
• cpe:2.3:h:netgear:r7000:*:*:*:*:*:*:*:*
• cpe:2.3:h:netgear:r6900p:*:*:*:*:*:*:*:*
• cpe:2.3:h:netgear:r6700v3:*:*:*:*:*:*:*:*
• cpe:2.3:h:netgear:r6400v2:*:*:*:*:*:*:*:*

External links

https://kb.netgear.com/000064724/Security-Advisory-for-Security-Misconfiguration-on-Some-Routers-and-Orbi-WiFi-Systems-PSV-2021-0330

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

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.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.