CVE-2016-10184: D-Link DWR-932B path traversal in qmiweb

CVE-2016-10184 · Severity: high · CVSS 7.5 · Published 2017-01-30

The D-Link DWR-932B is a portable LTE router used to provide wireless internet access. A security flaw in its web management component allows an unauthorized person to read sensitive system files from the device over the network. This could lead to the exposure of configuration details or credentials, potentially compromising the security of the network and its users.

Technologies: Dlink Dwr-932b, Dlink Dwr-932b Firmware. Vendors: Dlink.

Quick answers

Is CVE-2016-10184 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2016-10184 being exploited in the wild.
How severe is CVE-2016-10184?
High severity, with a CVSS score of 7.5, published 30 January 2017.
Which products and versions are affected?
D-Link DWR-932B firmware 02.02eu revB.
Is there a fix for CVE-2016-10184?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2016-10184 attacked?
It is attacked over the network, in a network appliance.
Am I affected by CVE-2016-10184?
Check whether you run Dlink Dwr-932b or Dlink Dwr-932b Firmware. 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

A path traversal vulnerability (CWE-22) exists in the 'qmiweb' HTTP daemon of the D-Link DWR-932B router (specifically firmware revB 02.02eu). The component fails to properly sanitize input, allowing the use of '..%2f' (URL-encoded dot-dot-slash) sequences to escape the intended web directory. An unauthenticated attacker can exploit this over the network to read arbitrary files on the underlying Linux filesystem. This vulnerability was disclosed alongside several other critical issues for this device, including hardcoded credentials and a UDP-based backdoor. As of the advisory date, no official patches were available from the vendor.

Affected products

  • D-Link DWR-932B firmware 02.02eu revB

Timeline

  • 2016-09-28: disclosed: Initial public disclosure by researcher Pierre Kim
  • 2017-01-30: advisory: NVD publication of CVE-2016-10184

References

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