CWE-790: Improper Filtering of Special Elements
The product receives data from an upstream component, but does not filter or incorrectly filters special elements before sending it to a downstream component.
How it's found
Improper Filtering of Special Elements describes a general pattern rather than a single fixed bug. Testers use a mix of static analysis and manual code review to find where a target's code matches this pattern, then confirm exploitability by hand.
Consequences
- Unexpected State
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-790?
The product receives data from an upstream component, but does not filter or incorrectly filters special elements before sending it to a downstream component.
How do you find Improper Filtering of Special Elements?
Improper Filtering of Special Elements describes a general pattern rather than a single fixed bug. Testers use a mix of static analysis and manual code review to find where a target's code matches this pattern, then confirm exploitability by hand.
What is the impact of CWE-790?
Unexpected State
Does TurboPentest test for Improper Filtering of Special Elements?
This weakness is not covered by the automated black-box pentest. IntegSec pentesters cover it in a manual engagement.
Related CWEs
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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