AttacheCase vulnerable to directory traversal


AttacheCase is an open source file encryption software provided by HiBARA Software. AttacheCase contains a directory traversal vulnerability (CWE-22) due to a flaw in processing filenames in ATC files.

Kazuki Furukawa 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 3.3 (Low) [IPA Score]
  • Attack Vector: Local
  • Attack Complexity: Low
  • Privileges Required: None
  • User Interaction: Required
  • Scope: Unchanged
  • Confidentiality Impact: None
  • 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
Affected Products

HiBARA Software
  • AttacheCase ver. and earlier
  • AttacheCase ver. and earlier


Decrypting a crafted ATC file may result in creation of an arbitrary file or overwriting of an existing file.

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

HiBARA Software
CWE (What is CWE?)

  1. Path Traversal(CWE-22) [IPA Evaluation]
CVE (What is CVE?)

  1. CVE-2016-7842

  1. JVN : JVN#83917769
  2. National Vulnerability Database (NVD) : CVE-2016-7842
Revision History

  • [2017/01/16]
      Web page was published
      References : Content was added