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Applications that accept untrusted input should normalize the input before validating it. Normalization is important because in Unicode, the same string can have many different representations. According to the Unicode Standard [Davis 2008], annex #15, Unicode Normalization Forms:
When implementations keep strings in a normalized form, they can be assured that equivalent strings have a unique binary representation.
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Rule | Severity | Likelihood | Remediation Cost | Priority | Level |
|---|---|---|---|---|---|
IDS01-J | High | Probable | Medium | P12 | L1 |
Automated Detection
| Tool | Version | Checker | Description | ||||||
|---|---|---|---|---|---|---|---|---|---|
| The Checker Framework |
| Tainting Checker | Trust and security errors (see Chapter 8) | ||||||
| Fortify | 1.0 | Process_Control | Implemented |
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