CVE-2016-10175: NETGEAR WNR2000 information disclosure in BRS_netgear_success.html

CVE-2016-10175 · Severity: critical · CVSS 9.8 · Published 2017-01-30

A vulnerability in several NETGEAR router models allows unauthorized individuals to view the device's serial number without logging in. This serial number is a critical piece of information that can be used to bypass security questions and reset the administrator password. If exploited, an attacker could take full control of the router, change network settings, or intercept internet traffic.

Technologies: NETGEAR WNR2000v3, NETGEAR WNR2000v4, NETGEAR WNR2000v5. Vendors: NETGEAR.

Quick answers

Is CVE-2016-10175 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2016-10175 being exploited in the wild.
How severe is CVE-2016-10175?
Critical severity, with a CVSS score of 9.8, published 30 January 2017.
Which products and versions are affected?
NETGEAR WNR2000v3 All firmware versions prior to 1.0.2.14; NETGEAR WNR2000v4 All firmware versions prior to 1.0.0.62.
Is there a fix for CVE-2016-10175?
A patch was published on 2017-01-26: Production firmware released for WNR2000 series Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2016-10175 attacked?
It is attacked over the network or from the adjacent network, in a network appliance.
Am I affected by CVE-2016-10175?
Check whether you run NETGEAR D6100, NETGEAR R6220, NETGEAR WNDR3700v4 or one of the others listed at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

The vulnerability is an information disclosure (CWE-200) where the web server (uhttpd) leaks the device's serial number in the JavaScript content of the /BRS_netgear_success.html URI. This leakage is significant because the serial number is used as a primary seed or validation token for password recovery mechanisms. When combined with other vulnerabilities (such as CVE-2016-10176), an unauthenticated attacker can reset the administrator password. The attack is possible over the local network (LAN) by default or over the wide area network (WAN) if remote management is enabled. NETGEAR has released firmware updates for affected models to address this and related vulnerabilities.

Affected products

  • NETGEAR WNR2000v5 All firmware versions prior to 1.0.0.42
  • NETGEAR WNR2000v4 All firmware versions prior to 1.0.0.62
  • NETGEAR WNR2000v3 All firmware versions prior to 1.0.2.14
  • NETGEAR D6100
  • NETGEAR R6220
  • NETGEAR WNDR3700v4

Timeline

  • 2016-12-20: disclosed: Initial 0-day disclosure by researcher Pedro Ribeiro
  • 2016-12-22: advisory: NETGEAR published initial security advisory PSV-2016-0255
  • 2017-01-26: patched: Production firmware released for WNR2000 series
  • 2017-01-30: advisory: CVE-2016-10175 published to NVD

References

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