[Japanese]

JVNDB-2017-000024

Self-Extracting Archives created by 7-ZIP32.DLL may insecurely load Dynamic Link Libraries

Overview

7-ZIP32.DLL is an open source library for compressing and decompressing 7z and zip format files. It can also create self-extracting archive files.
Self-extracting archive files created by 7-ZIP32.DLL contain an issue with the DLL search path, which may lead to insecurely loading Dynamic Link Libraries (CWE-427).

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]
  • Access Vector: Local
  • Attack Complexity: Low
  • Privileges Required: None
  • User Interaction: Required
  • Scope: Unchanged
  • Confidentiality Impact: High
  • Integrity Impact: High
  • Availability Impact: High
Affected Products


Akky
  • 7-ZIP32.DLL ver9.22.00.01 and earlier

Impact

Arbitrary code may be executed with the privilege of the user invoking a vulnerable self-extracting archive file.
Solution

[Use the Latest Library to Recreate Self-Extracting Archive files]
Use the latest version according to the information provided by the developer, and recreate self-extracting archive files.
Vendor Information

Akky
CWE (What is CWE?)

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

  1. CVE-2017-2107
References

  1. JVN : JVN#86200862
Revision History

[2017/02/17]
  Web page was published