[Japanese]

JVNDB-2018-000012

Installer of "FLET'S Azukeru Backup Tool" may insecurely load Dynamic Link Libraries

Overview

"FLET'S Azukeru Backup Tool" provided by NIPPON TELEGRAPH AND TELEPHONE EAST CORPORATION is software to automatically back up files in the user's computer to "FLET'S Azukeru" service. Installer of "FLET'S Azukeru Backup Tool" contains an issue with the DLL search path, which may lead to insecurely loading Dynamic Link Libraries.

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]
  • Attack 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 EAST CORPORATION
  • FLET'S Azukeru Backup Tool version 1.5.2.6 and earlier

Impact

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

[Use the latest installer]
This vulnerability has been already addressed in the latest version (ver.1.5.2.7) released in 2017 May 11.
When installing "FLET'S Azukeru Backup Tool", use the latest installer according to the information provided by the developer.
If the old version of "FLET'S Azukeru Backup Tool" obtained from the website before 2017 May 11 resides in your computer, delete it immediately.

Note that this vulnerability affects the installer only, thus users who have already installed "FLET'S Azukeru Backup Tool" do not need to re-install the software using the latest installer.

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

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

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

  1. CVE-2018-0515
References

  1. JVN : JVN#04564808
  2. JVN : JVNTA#91240916
Revision History

[2018/02/13]
  Web page was published