[Japanese]

JVNDB-2018-000017

Multiple vulnerabilities in WXR-1900DHP2

Overview

WXR-1900DHP2 provided by BUFFALO INC. is a wireless LAN router. WXR-1900DHP2 contains multiple vulnerabilities listed below.

* Missing Authentication for Critical Function (CWE-306) - CVE-2018-0521
* Buffer Overflow (CWE-119) - CVE-2018-0522
* OS Command Injection (CWE-78) - CVE-2018-0523

Taizoh Tsukamoto of Mitsui Bussan Secure Directions, Inc. reported this vulnerability to IPA.
JPCERT/CC coordinated with the developer under Information Security Early Warning Partnership.
CVSS Severity (What is CVSS?)

CVSS V3 Severity:
Base Metrics 8.8 (High) [IPA Score]
  • Attack Vector: Adjacent Network
  • Attack Complexity: Low
  • Privileges Required: None
  • User Interaction: None
  • Scope: Unchanged
  • Confidentiality Impact: High
  • Integrity Impact: High
  • Availability Impact: High
CVSS V2 Severity:
Base Metrics 8.3 (High) [IPA Score]
  • Access Vector: Adjacent Network
  • Access Complexity: Low
  • Authentication: None
  • Confidentiality Impact: Complete
  • Integrity Impact: Complete
  • Availability Impact: Complete
The above CVSS base scores have been assigned for CVE-2018-0521

CVSS V3 Severity:
Base Metrics: 5.0 (Medium) [IPA Score]
  • Attack Vector: Adjacent
  • Attack Complexity: High
  • Privileges Required: None
  • User Interaction: Required: None
  • Scope: Unchanged
  • Confidentiality Impact: Low
  • Integrity Impact: Low
  • Availability Impact: Low
CVSS V2 Severity:
Base Metrics: 5.4 (Medium) [IPA Score]
  • Access Vector: Adjacent Network
  • Access Complexity: Medium
  • Authentication: None
  • Confidentiality Impact: Partial
  • Integrity Impact: Partial
  • Availability Impact: Partial
The above CVSS base scores have been assigned for CVE-2018-0522

CVSS V3 Severity:
Base Metrics: 6.3 (Medium) [IPA Score]
  • Attack Vector: Adjacent
  • Attack Complexity: Low
  • Privileges Required: None
  • User Interaction: Required: None
  • Scope: Unchanged
  • Confidentiality Impact: Low
  • Integrity Impact: Low
  • Availability Impact: Low
CVSS V2 Severity:
Base Metrics: 5.8 (Medium) [IPA Score]
  • Access Vector: Adjacent Network
  • Access Complexity: Low
  • Authentication: None
  • Confidentiality Impact: Partial
  • Integrity Impact: Partial
  • Availability Impact: Partial
The above CVSS base scores have been assigned for CVE-2018-0523
Affected Products


BUFFALO INC.
  • WXR-1900DHP2 firmware Ver.2.48 and earlier

Impact

The possible impact of each vulnerability is as follows:

* A user with access to the network that is connected to the affected device may execute an arbitrary command on the device - CVE-2018-0521
* If a user views a specially crafted file while logged into the affected device, arbitrary code may be executed - CVE-2018-0522
* A user with access to the network that is connected to the affected device may execute an arbitrary command on the device - CVE-2018-0523
Solution

[Update the Firmware]
Apply the latest firmware update according to the information provided by the developer.
Vendor Information

BUFFALO INC.
CWE (What is CWE?)

  1. Buffer Errors(CWE-119) [IPA Evaluation]
  2. Improper Authentication(CWE-287) [IPA Evaluation]
  3. OS Command Injection(CWE-78) [IPA Evaluation]
CVE (What is CVE?)

  1. CVE-2018-0521
  2. CVE-2018-0522
  3. CVE-2018-0523
References

  1. JVN : JVN#97144273
  2. National Vulnerability Database (NVD) : CVE-2018-0521
  3. National Vulnerability Database (NVD) : CVE-2018-0522
  4. National Vulnerability Database (NVD) : CVE-2018-0523
Revision History

  • [2018/02/26]
      Web page was published
  • [2018/06/14]
      References : Contents were added

Date Public2018/02/26
Date First Published2018/02/26
Date Last Updated2018/06/14