[Japanese]

JVNDB-2017-000237

Multiple vulnerabilities in BOOK WALKER for Windows/Mac

Overview

BOOK WALKER for Windows/Mac provided by BOOK WALKER Co.,Ltd. are applications to view e-books. Installer of BOOK WALKER for Windows contains a vulnerabirity, which may lead to insecurely loading Dynamic Link Libraries.

Also BOOK WALKER for Windows/Mac contain a vulnerability which may lead to information disclosure as a result of reading a specially crafted file.
* DLL preloading vulnerability (CWE-427) - CVE-2017-10887
* Information disclosure vulnerability (CWE-200) - CVE-2017-10888

Yuji Tounai of NTT Communications Corporation reported this vulnerability to IPA.
JPCERT/CC coordinated with the developer under Information Security Early Warning Partnership.
CVSS Severity (What is CVSS?)

Base Metrics: 7.1 (High) [IPA Score]
  • Access Vector: Network
  • Access Complexity: Medium
  • Authentication: None
  • Confidentiality Impact: Partial
  • Integrity Impact: None
  • Availability Impact: None

CVSS V3 Severity:
Base Metrics: 5.5 (Medium) [IPA Score]
  • Attack Vector: Local
  • Attack Complexity: Low
  • Privileges Required: None
  • User Interaction: Required
  • Scope: Unchanged
  • Confidentiality Impact: High
  • Integrity Impact: None
  • Availability Impact: None
The above CVSS base scores have been assigned for CVE-2017-10888.

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
The above CVSS base scores have been assigned for CVE-2017-10887.
Affected Products


BOOK WALKER Co.,Ltd.
  • BOOK WALKER for Windows Ver.1.2.9 and earlier (CVE-2017-10887, CVE-2017-10888)
  • BOOK WALKER for Mac Ver.1.2.5 and earlier (CVE-2017-10888)

Impact

* Arbitrary code may be executed with the privilege of the user invoking the installer. - CVE-2017-10887
* An arbitrary local file may be read by an attacker, which may result in information disclosure. - CVE-2017-10888
Solution

Solution for CVE-2017-10887:
[Use the latest installer]
When installing BOOK WALKER for Windows for the first time, be sure to use the latest installer according to the information provided by the developer.

Solution for CVE-2017-10888:
[Update the software]
Update to the latest version according to the information provided by the developer.
Vendor Information

BOOK WALKER Co.,Ltd.
CWE (What is CWE?)

  1. Information Exposure(CWE-200) [IPA Evaluation]
  2. No Mapping(CWE-Other) [IPA Evaluation]
CVE (What is CVE?)

  1. CVE-2017-10887
  2. CVE-2017-10888
References

  1. JVN : JVN#18420340
  2. JVN : JVNTA#91240916
Revision History

[2017/11/14]
  Web page was published