CVE-2017-5521 Information

Description

An issue was discovered on NETGEAR R8500 R8300 R7000 R6400 R7300 R7100LG R6300v2 WNDR3400v3 WNR3500Lv2 R6250 R6700 R6900 and R8000 devices. They are prone to password disclosure via simple crafted requests to the web management server. The bug is exploitable remotely if the remote management option is set and can also be exploited given access to the router over LAN or WLAN. When trying to access the web panel a user is asked to authenticate; if the authentication is canceled and password recovery is not enabled the user is redirected to a page that exposes a password recovery token. If a user supplies the correct token to the page /passwordrecovered.cgi?id=TOKEN (and password recovery is not enabled) they will receive the admin password for the router. If password recovery is set the exploit will fail as it will ask the user for the recovery questions that were previously set when enabling that feature. This is persistent (even after disabling the recovery option the exploit will fail) because the router will ask for the security questions.

CVSS Vector

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Reference

http://kb.netgear.com/30632/Web-GUI-Password-Recovery-and-Exposure-Security-Vulnerability http://www.securityfocus.com/bid/95457 https://www.exploit-db.com/exploits/41205/

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

8.1