Add requirement on dynamic URL building to resolve #1961 (#1978)

* Update 0x13-V5-Validation-Sanitization-Encoding.md Addressing comment #1961 * Reverting change to 5.3.1 which is being handled by #1943 --------- Co-authored-by: Josh Grossman <[email protected]>
OWASP · Jul 24, 2024 · 7ca3414 · 7ca3414
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diff --git a/5.0/en/0x13-V5-Validation-Sanitization-Encoding.md b/5.0/en/0x13-V5-Validation-Sanitization-Encoding.md
@@ -77,6 +77,7 @@ Output encoding close or adjacent to the interpreter in use is critical to the s
 | **5.3.10** | Verify that the application protects against XPath injection or XML injection attacks. | ✓ | ✓ | ✓ | 643 |
 | **5.3.11** | [ADDED] Verify that the application is protected against CSV and Formula Injection. The application should follow the escaping rules defined in RFC4180 2.6 and 2.7 when exporting CSV files. The application should escape special characters including '=', '+', '-', '@' '\t' (tab) and '\00' (null character) using a single quote, if they are the first character in a field, when exporting CSV files and other spreadsheet formats such as xls, xlsx, odf. | ✓ | ✓ | ✓ | 1236 |
 | **5.3.12** | [ADDED] Verify that LaTeX processors are configured securely (such as not using the "--shell-escape" flag) and command allow-listing is used to prevent LaTeX injection attacks. | | ✓ | ✓ | |
+| **5.3.13** | [ADDED, SPLIT FROM 5.3.1] Verify that when dynamically building URLs, untrusted data is encoded according to its context (e.g., URL encoding or base64url encoding for query or path parameters). Ensure that only safe URL protocols are permitted (e.g., disallow javascript: or data:). | ✓ | ✓ | ✓ | 116 |
 
 Note: Using parameterized queries or escaping SQL is not always sufficient; table and column names, ORDER BY and so on, cannot be escaped. The inclusion of escaped user-supplied data in these fields results in failed queries or SQL injection.