NETGEAR RAX30 USB Share Link Following Information Disclosure Vulnerability

June 8th, 2023
ZDI-23-837 ZDI-CAN-19498

CVE ID

CVE-2023-34283

CVSS Score

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

Affected Vendors

NETGEAR

Affected Products

RAX30

Vulnerability Details

This vulnerability allows physically present attackers to disclose sensitive information on affected installations of NETGEAR RAX30 routers. Authentication is not required to exploit this vulnerability.

The specific flaw exists within the handling of symbolic links on removable USB media. By creating a symbolic link, an attacker can abuse the router's web server to access arbitrary local files. An attacker can leverage this vulnerability to disclose information in the context of root.

Additional Details

NETGEAR has issued an update to correct this vulnerability. More details can be found at:
https://kb.netgear.com/000065650/Security-Advisory-for-Multiple-Vulnerabilities-on-the-RAX30-PSV-2023-0003-PSV-2023-0004?article=000065650

Disclosure Timeline

  • 2023-01-04 - Vulnerability reported to vendor
  • 2023-06-08 - Coordinated public release of advisory

Credit

Dmitry "InfoSecDJ" Janushkevich of Trend Micro Zero Day Initiative

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