[Japanese]

JVNDB-2017-000211

Installer of "Remote Support Tool (Enkaku Support Tool)" may insecurely load Dynamic Link Libraries

Overview

Installer of "Remote Support Tool (Enkaku Support Tool)" provided by NIPPON TELEGRAPH AND TELEPHONE EAST CORPORATION and NIPPON TELEGRAPH AND TELEPHONE WEST CORPORATION contains an issue with the DLL search path, which may lead to insecurely loading Dynamic Link Libraries (CWE-427).

Eili Masami of Tachibana Lab. reported this vulnerability to IPA.
JPCERT/CC coordinated with the developer under Information Security Early Warning Partnership.
CVSS Severity (What is CVSS?)

Base Metrics: 6.8 (Medium) [IPA Score]
  • Access Vector: Network
  • Access Complexity: Medium
  • Authentication: None
  • Confidentiality Impact: Partial
  • Integrity Impact: Partial
  • Availability Impact: Partial

CVSS V3 Severity:
Base Metrics: 7.8 (High) [IPA Score]
  • Access Vector: Local
  • Attack Complexity: Low
  • Privileges Required: None
  • User Interaction: Required
  • Scope: Unchanged
  • Confidentiality Impact: High
  • Integrity Impact: High
  • Availability Impact: High
Affected Products


NIPPON TELEGRAPH AND TELEPHONE WEST CORPORATION
  • Remote Support Tool (Enkaku Support Tool) all versions distributed through the website till 2017 August 10
NIPPON TELEGRAPH AND TELEPHONE EAST CORPORATION
  • Remote Support Tool (Enkaku Support Tool) all versions distributed through the website till 2017 August 10

Impact

Arbitrary code may be executed with the privilege of the user invoking the installer.
Solution

[Use the latest installer]
When installing "Remote Support Tool (Enkaku Support Tool)", use the latest installer according to the information provided by the developer.

Note that this vulnerability affects the installer only, thus users who have already installed "Remote Support Tool (Enkaku Support Tool)" do not need to re-install the software using the latest installer. However if the old "Remote Support Tool (Enkaku Support Tool)" obtained from the website before 2017 August 10 resides in your computer, delete it immediately.

For details, refer to the information provided by the developer.

* NTT EAST Important : To the users of "Remote Support Tool (Enkaku Support Tool)"
* NTT WEST About a vulnerability in "Remote Support Tool for Windows"
Vendor Information

NIPPON TELEGRAPH AND TELEPHONE WEST CORPORATION NIPPON TELEGRAPH AND TELEPHONE EAST CORPORATION
CWE (What is CWE?)

  1. No Mapping(CWE-Other) [IPA Evaluation]
CVE (What is CVE?)

  1. CVE-2017-10829
References

  1. JVN : JVNTA#91240916
  2. JVN : JVN#26115441
Revision History

[2017/08/30]
  Web page was published