Update 05-Testing_for_SQL_Injection.md #1123
Merged
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
Fix boolean logic error for inference methods
The current inferential query will only work in cases where the Id value actually equals 1. In blind SQL cases this value is likely not known.
SELECT field1, field2, field3 FROM Users WHERE Id='1' AND I(SUBSTRING(username,1,1))=97 AND '1'='1'
Changing the first AND to an OR will ensure the inferential query executes regardless of the Id value.
SELECT field1, field2, field3 FROM Users WHERE Id='1' OR ASCII(SUBSTRING(username,1,1))=97 AND '1'='1'