Certain NETGEAR devices are affected by CSRF. This affects D1500 before 1.0.0.25, D500 before 1.0.0.25, D6100 before 1.0.0.55, D7000 before 1.0.1.50, D7800 before 1.0.1.28, EX6100v2 before 1.0.1.60, EX6150v2 before 1.0.1.60, JNR1010v2 before 1.1.0.46, JR6150 before 1.0.1.16, JWNR2010v5 before 1.1.0.46, PR2000 before 1.0.0.18, R6020 before 1.0.0.26, R6050 before 1.0.1.16, R6080 before 1.0.0.26, R6100 before 1.0.1.20, R6220 before 1.1.0.60, R7500 before 1.0.0.118, R7500v2 before 1.0.3.20, R7800 before 1.0.2.40, R9000 before 1.0.2.52, WN3000RPv3 before 1.0.2.50, WN3100RPv2 before 1.0.0.40, WNDR3700v5 before 1.1.0.48, WNDR4300v2 before 1.0.0.48, WNDR4500v3 before 1.0.0.48, WNR1000v4 before 1.1.0.46, WNR2000v5 before 1.0.0.62, WNR2020 before 1.1.0.46, and WNR2050 before 1.1.0.46.
Weakness
The web application does not, or can not, sufficiently verify whether a well-formed, valid, consistent request was intentionally provided by the user who submitted the request.
Affected Software
| Name |
Vendor |
Start Version |
End Version |
| D1500_firmware |
Netgear |
* |
1.0.0.25 (excluding) |
Potential Mitigations
- Use a vetted library or framework that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid.
- For example, use anti-CSRF packages such as the OWASP CSRFGuard. [REF-330]
- Another example is the ESAPI Session Management control, which includes a component for CSRF. [REF-45]
- Use the “double-submitted cookie” method as described by Felten and Zeller:
- When a user visits a site, the site should generate a pseudorandom value and set it as a cookie on the user’s machine. The site should require every form submission to include this value as a form value and also as a cookie value. When a POST request is sent to the site, the request should only be considered valid if the form value and the cookie value are the same.
- Because of the same-origin policy, an attacker cannot read or modify the value stored in the cookie. To successfully submit a form on behalf of the user, the attacker would have to correctly guess the pseudorandom value. If the pseudorandom value is cryptographically strong, this will be prohibitively difficult.
- This technique requires Javascript, so it may not work for browsers that have Javascript disabled. [REF-331]
References