CWE-623: Unsafe ActiveX Control Marked Safe For Scripting
An ActiveX control is intended for restricted use, but it has been marked as safe-for-scripting.
How it's found
Unsafe ActiveX Control Marked Safe For Scripting is a specific, narrowly defined instance of a broader pattern. Testers confirm it with targeted code review and a proof-of-concept input that exercises the exact code path this weakness describes.
This might allow attackers to use dangerous functionality via a web page that accesses the control, which can lead to different resultant vulnerabilities, depending on the control's behavior.
Consequences
- Execute Unauthorized Code or Commands
Mitigations
- Architecture and Design: During development, do not mark it as safe for scripting.
- System Configuration: After distribution, you can set the kill bit for the control so that it is not accessible from Internet Explorer.
Where this fits in a TurboPentest engagement
This weakness is not covered by the automated black-box pentest. IntegSec pentesters cover it in a manual engagement.
Frequently asked questions
What is CWE-623?
An ActiveX control is intended for restricted use, but it has been marked as safe-for-scripting.
How do you find Unsafe ActiveX Control Marked Safe For Scripting?
Unsafe ActiveX Control Marked Safe For Scripting is a specific, narrowly defined instance of a broader pattern. Testers confirm it with targeted code review and a proof-of-concept input that exercises the exact code path this weakness describes.
What is the impact of CWE-623?
Execute Unauthorized Code or Commands
Does TurboPentest test for Unsafe ActiveX Control Marked Safe For Scripting?
This weakness is not covered by the automated black-box pentest. IntegSec pentesters cover it in a manual engagement.
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Written and reviewed by
Michel Chamberland - Founder & CEO, IntegSec
CISSP, OSCP, OSCE, CEH, GIAC, CCSK · 20+ years in offensive security
Michel has spent 20+ years on offensive security teams including IBM X-Force Red and Trustwave SpiderLabs, leading penetration tests, red team engagements, and breach response for Fortune 500 customers. He is the founder of IntegSec and the architect of TurboPentest.
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