WinSparkle issue where registry value is not validated


When an application that uses WinSparkle is launched, it checks the directory used by WinSparkle for temporary files and deletes any temporary files. This directory path is specified in a registry key.

In a situation where an attacker has modified the specific registry value used by this library, and a user launches an application that uses WinSparkle, an unintended directory or file may be deleted.

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

Base Metrics: 4.0 (Medium) [IPA Score]
  • Access Vector: Network
  • Access Complexity: High
  • Authentication: None
  • Confidentiality Impact: None
  • Integrity Impact: Partial
  • Availability Impact: Partial

CVSS V3 Severity:
Base Metrics: 3.6 (Low) [IPA Score]
  • Access Vector: Local
  • Attack Complexity: High
  • Privileges Required: None
  • User Interaction: Required
  • Scope: Unchanged
  • Confidentiality Impact: None
  • Integrity Impact: Low
  • Availability Impact: Low
Affected Products

Applications that use the product below are affected:

  • WinSparkle versions prior to 0.5.3

Wireshark version 2.0.5 has been reported to be affected by this issue. Applications other than Wireshark may also be affected.

Effects vary depending on the application. An arbitrary directory or file may be deleted with the privileges of the application.

[Update the software]
Update to the latest version according to the information provided by the developer.
Vendor Information

WinSparkle Wireshark
CWE (What is CWE?)

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

  1. CVE-2016-7838

  1. JVN : JVN#96681653
Revision History

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