JVN#31236539
[Simeji for Windows(β)] installer may insecurely load Dynamic Link Libraries
Overview
[Simeji for Windows(β)] installer may insecurely load Dynamic Link Libraries.
Products Affected
- [Simeji for Windows(β)] installer (simeji.exe)
Description
[Simeji for Windows(β)] installer provided by Baidu Japan Inc. contains 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 the installer.
Solution
Do not use [Simeji for Windows(β)] installer
The developer has stated that the development and support of [Simeji for Windows(β)] has been discontinued, thus recommends users to stop using the installer.
Users who already have installed [Simeji for Windows(β)] do not need to re-install the application, because this issue affects the installer only.
Vendor Status
| Vendor | Status | Last Update | Vendor Notes |
|---|---|---|---|
| Baidu Japan Inc. | Vulnerable | 2017/06/08 | Baidu Japan Inc. website |
References
-
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
| 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) |
| 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 prepared by an attacker in a specific folder.
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 |
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| JPCERT Reports |
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| CERT Advisory |
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| CPNI Advisory |
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| TRnotes |
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| CVE |
CVE-2017-2219 |
| JVN iPedia |
JVNDB-2017-000120 |