Vulnerability CVE-2017-5521


Published: 2017-01-17

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.

See advisories in our WLB2 database:
Topic
Author
Date
High
NETGEAR Multiple products Remote and Local Password Disclosure
Simon Kenin
31.01.2017

CVSS2 => (AV:N/AC:M/Au:N/C:P/I:N/A:N)

CVSS Base Score
Impact Subscore
Exploitability Subscore
4.3/10
2.9/10
8.6/10
Exploit range
Attack complexity
Authentication
Remote
Medium
No required
Confidentiality impact
Integrity impact
Availability impact
Partial
None
None
Affected software
Netgear -> Wndr4500 firmware 
Netgear -> Dgn2200bv4 firmware 
Netgear -> Wndr4000 firmware 
Netgear -> D6300b firmware 
Netgear -> D6300 firmware 
Netgear -> R6200 firmware 
Netgear -> Ac1450 firmware 
Netgear -> Wnr1000v3 firmware 
Netgear -> D6400 firmware 
Netgear -> D6220 firmware 
Netgear -> R6300 firmware 
Netgear -> Vegn2610 firmware 
Netgear -> Wndr3700v3 firmware 

 References:
http://kb.netgear.com/30632/Web-GUI-Password-Recovery-and-Exposure-Security-Vulnerability
http://www.securityfocus.com/bid/95457

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