The MSI installer for Splashtop Streamer for Windows before 3.7.0.0 uses a temporary folder with weak permissions during installation. A local user can exploit this to escalate privileges to SYSTEM via an oplock on CredProvider_Inst.reg.
Weakness
The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Streamer | Splashtop | * | 3.7.0.0 (excluding) |
Potential Mitigations
Related Attack Patterns
- https://cwe.mitre.org/data/definitions/122.html
- https://cwe.mitre.org/data/definitions/233.html
- https://cwe.mitre.org/data/definitions/58.html
References
- https://github.com/SpacePlant/Vulns/blob/main/Advisories/2024/4.md
- https://support-splashtopbusiness.splashtop.com/hc/en-us/articles/25584410412571--Splashtop-Streamer-version-v3-7-0-0-for-Windows-released
- https://github.com/SpacePlant/Vulns/blob/main/Advisories/2024/4.md
- https://support-splashtopbusiness.splashtop.com/hc/en-us/articles/25584410412571--Splashtop-Streamer-version-v3-7-0-0-for-Windows-released