JVN#29902403
Installers generated by Squirrel.Windows may insecurely load Dynamic Link Libraries
Overview
Installers generated by Squirrel.Windows may insecurely load Dynamic Link Libraries.
Products Affected
- Installers generated by Squirrel.Windows 2.0.1 and earlier
Description
Squirrel.Windows is both a toolset and a library that provides installation and update functionality for Windows desktop applications.
Installers generated by Squirrel.Windows 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 the installer.
Solution
As of December 21, 2022, the fixed version is not provided.
According to the developer, there are no plans to release the fixed version soon, but the following fix was committed to 'develop' branch of the GitHub repository on June 1, 2021.
Vendor Status
| Vendor | Link |
| Squirrel | Better delay load urlmon and move official build to GH Actions #1807 |
| Squirrel.Windows |
References
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Japan Vulnerability Notes 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
Koh You Liang of Sompo Holdings, Inc. reported this vulnerability to the developer first, and to IPA later.
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-2022-46330 |
| JVN iPedia |
JVNDB-2022-000102 |