JVN#75028871
CG-WLR300GNV Series does not limit authentication attempts
Overview
CG-WLR300GNV Series does not limit authentication attempts.
Products Affected
- CG-WLR300GNV
- CG-WLR300GNV-W
Description
CG-WLR300GNV and CG-WLR300GNV-W provided by Corega Inc are wireless LAN routers. The WPS functionality in CG-WLR300GNV Series does not limit PIN authentication attempts, making it susceptible to brute force attacks.
Impact
An unauthenticated attacker within wireless range of the device may perform a brute force attack to recover the PIN. Using the recovered PIN, the attacker may gain access to the network.
Solution
Apply a Workaround
The following workaround will mitigate this vulnerability.
- Disable the WPS functionality
Vendor Status
| Vendor | Link |
| Corega Inc | About vulnerability that does not limit authentication attempts |
References
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CERT/CC Vulnerability Note VU#723755
WiFi Protected Setup (WPS) PIN brute force vulnerability
JPCERT/CC Addendum
Vulnerability Analysis by JPCERT/CC
| Attack Vector(AV) | Physical (P) | Local (L) | Adjacent (A) | Network (N) |
|---|---|---|---|---|
| Attack Complexity(AC) | High (H) | Low (L) | ||
| Privileges Required(PR) | High (H) | Low (L) | None (N) | |
| User Interaction(UI) | Required (R) | None (N) | ||
| Scope(S) | Unchanged (U) | Changed (C) | ||
| Confidentiality Impact(C) | None (N) | Low (L) | High (H) | |
| Integrity Impact(I) | None (N) | Low (L) | High (H) | |
| Availability Impact(A) | None (N) | Low (L) | High (H) |
| Access Vector(AV) | Local (L) | Adjacent Network (A) | Network (N) |
|---|---|---|---|
| Access Complexity(AC) | High (H) | Medium (M) | Low (L) |
| Authentication(Au) | Multiple (M) | Single (S) | None (N) |
| Confidentiality Impact(C) | None (N) | Partial (P) | Complete (C) |
| Integrity Impact(I) | None (N) | Partial (P) | Complete (C) |
| Availability Impact(A) | None (N) | Partial (P) | Complete (C) |
Credit
Takeshi Okamoto of Kanagawa Institute of Technology and Takaaki Minegishi reported this vulnerability to IPA.
JPCERT/CC coordinated with the developer under Information Security Early Warning Partnership.
Other Information
| JPCERT Alert |
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| JPCERT Reports |
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| CERT Advisory |
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| CPNI Advisory |
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| TRnotes |
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| CVE |
CVE-2016-4824 |
| JVN iPedia |
JVNDB-2016-000109 |