[Japanese]

JVNDB-2017-000180

Multiple vulnerabilities in multiple Buffalo wireless LAN routers

Overview

WMR-433 and WMR-433W provided by BUFFALO INC. are wireless LAN routers. WMR-433 and WMR-433W contain multiple vulnerabilities listed below.

* Cross-site Request Forgery (CWE-352) - CVE-2017-2273
* Reflected Cross-site Scripting (CWE-79) - CVE-2017-2274

Manabu Kobayashi 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 4.3 (Medium) [IPA Score]
  • Attack Vector: Network
  • Attack Complexity: Low
  • Privileges Required: None
  • User Interaction: Required
  • Scope: Unchanged
  • Confidentiality Impact: None
  • Integrity Impact: None
  • Availability Impact: Low
CVSS V2 Severity:
Base Metrics 4.3 (Medium) [IPA Score]
  • Access Vector: Network
  • Access Complexity: Medium
  • Authentication: None
  • Confidentiality Impact: None
  • Integrity Impact: None
  • Availability Impact: Partial
The above CVSS base scores have been assigned for CVE-2017-2273.

CVSS V3 Severity:
Base Metrics: 6.1 (Medium) [IPA Score]
  • Attack Vector: Network
  • Attack Complexity: Low
  • Privileges Required: None
  • User Interaction: Required
  • Scope: Changed
  • Confidentiality Impact: Low
  • Integrity Impact: Low
  • Availability Impact: None
CVSS V2 Severity:
Base Metrics: 4.3 (Medium) [IPA Score]
  • Access Vector: Network
  • Access Complexity: Medium
  • Authentication: None
  • Confidentiality Impact: None
  • Integrity Impact: Partial
  • Availability Impact: None
The above CVSS base scores have been assigned for CVE-2017-2274.
Affected Products


BUFFALO INC.
  • WMR-433 firmware Ver.1.02 and earlier
  • WMR-433W firmware Ver.1.40 and earlier

Impact

The possible impact of each vulnerability is as follows:

* If a logged-in user accesses a specially crafted page, configuration of the device may be changed or the device may be rebooted - CVE-2017-2273
* If a logged-in user accesses a specially crafted page, an arbitrary script may be executed on the user's web browser - CVE-2017-2274
Solution

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

BUFFALO INC.
CWE (What is CWE?)

  1. Cross-Site Request Forgery(CWE-352) [IPA Evaluation]
  2. Cross-site Scripting(CWE-79) [IPA Evaluation]
CVE (What is CVE?)

  1. CVE-2017-2273
  2. CVE-2017-2274
References

  1. JVN : JVN#48413726
  2. National Vulnerability Database (NVD) : CVE-2017-2273
  3. National Vulnerability Database (NVD) : CVE-2017-2274
Revision History

  • [2017/07/20]
      Web page was published
    [2018/01/24]
      References : Contents were added

Date Public2017/07/20
Date First Published2017/07/20
Date Last Updated2018/01/24