BeZIP vulnerable to directory traversal


BeZIP contains a directory traversal vulnerability.

BeZIP provided by Be Graph Co.,Ltd. is a file compression/extraction software supporting ZIP and LZH formats. BeZIP contains a directory traversal vulnerability.

Ryohei Koike of Sakura Information Systems Co., Ltd. reported this vulnerability to IPA.
JPCERT/CC coordinated with the developer under Information Security Early Warning Partnership.
CVSS Severity (What is CVSS?)

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

Be Graph Co.,Ltd.
  • BeZIP prior to V3.10


An arbitrary file may be created or altered when extracting a specially crafted file.

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

[Apply a workaround]
By applying the following workaround, BeZIP will display the confirmation dialog when extracting a file with the same name.

* Disable the following option in [File]-[Options]-[Extract] tab.
- Files of same name will always overwrite.

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

Be Graph Co.,Ltd.
CWE (What is CWE?)

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

  1. CVE-2012-5171

  1. JVN : JVN#18223913
  2. National Vulnerability Database (NVD) : CVE-2012-5171
Revision History

  • [2012/11/07]
      Web page was published