Published:2017/07/10  Last Updated:2017/07/10

JVN#29939155
Self-Extracting Archives created by File Compact may insecurely load Dynamic Link Libraries

Overview

Self-extracting archive files created by File Compact may insecurely load Dynamic Link Libraries.

Products Affected

The self-extracting archive files created by following software are affected:

  • File Compact Ver.5 version 5.09 and earlier
  • File Compact Ver.6 version 6.01 and earlier
  • File Compact Ver.7 version 7.01 and earlier

Description

File Compact provided by SOURCENEXT CORPORATION is compression/decompression software. It can also create self-extracting archive files. Self-extracting archive files created by File Compact contain an issue with the DLL search path, which may lead to insecurely loading Dynamic Link Libraries (CWE-427).

Impact

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

Solution

Update File Compact and Recreate Self-Extracting Archive files
Update to the latest version according to the information provided by the developer, and recreate self-extracting archive files.

Vendor Status

Vendor Status Last Update Vendor Notes
SOURCENEXT CORPORATION Vulnerable 2017/07/10 SOURCENEXT CORPORATION website

References

  1. Japan Vulnerability Note JVNTA#91240916
    Insecure DLL Loading and Command Execution Issues on Many Windows Application Programs

JPCERT/CC Addendum

Vulnerability Analysis by JPCERT/CC

CVSS v3 CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Base Score: 7.8
Attack Vector(AV) Physical (P) Local (L) Adjacent (A) Network (N)
Attack Complexity(AC) High (H) Low (L)
Privileges Required(PR) High (H) Low (L) None (N)
User Interaction(UI) Required (R) None (N)
Scope(S) Unchanged (U) Changed (C)
Confidentiality Impact(C) None (N) Low (L) High (H)
Integrity Impact(I) None (N) Low (L) High (H)
Availability Impact(A) None (N) Low (L) High (H)
CVSS v2 AV:N/AC:M/Au:N/C:P/I:P/A:P
Base Score: 6.8
Access Vector(AV) Local (L) Adjacent Network (A) Network (N)
Access Complexity(AC) High (H) Medium (M) Low (L)
Authentication(Au) Multiple (M) Single (S) None (N)
Confidentiality Impact(C) None (N) Partial (P) Complete (C)
Integrity Impact(I) None (N) Partial (P) Complete (C)
Availability Impact(A) None (N) Partial (P) Complete (C)

Comment

This analysis assumes that the user is tricked into placing a malicious DLL file in the same directory where a vulnerable self-extracting archive file resides.

Credit

Eili Masami of Tachibana Lab. reported this vulnerability to IPA.
JPCERT/CC coordinated with the developer under Information Security Early Warning Partnership.

Other Information

JPCERT Alert
JPCERT Reports
CERT Advisory
CPNI Advisory
TRnotes
CVE CVE-2017-2252
JVN iPedia JVNDB-2017-000170