fix(spanner): escape embedded backticks in dbapi escape_name#17810
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fix(spanner): escape embedded backticks in dbapi escape_name#17810sakthivelmanii wants to merge 1 commit into
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This pull request updates the escape_name function in parse_utils.py to escape backticks by doubling them, and adds corresponding unit tests. The review feedback points out a critical security vulnerability (SQL injection) where identifiers containing other special characters (such as comments or semicolons) but no spaces, hyphens, or backticks could bypass escaping. A code suggestion is provided to resolve this by strictly validating identifiers and escaping any that are not valid regular ASCII identifiers.
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In google-cloud-spanner DB-API, escape_name() did not check for or double embedded backtick characters (`) when wrapping identifiers. This allowed identifiers containing backticks to break out of backtick-quoted identifier scopes (CWE-89 identifier injection).
This commit updates escape_name() to:
- Detect embedded backtick characters in identifier names.
- Escape internal backticks by doubling them (replace("`", "``")) when enclosing identifiers in backticks.
- Add unit test cases for embedded backticks in test_escape_name.
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Wait for #17880 to be merged first |
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In google-cloud-spanner DB-API, escape_name() did not check for or double embedded backtick characters (`) when wrapping identifiers. This allowed identifiers containing backticks to break out of backtick-quoted identifier scopes (CWE-89 identifier injection).
This commit updates escape_name() to:
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Fixes #<issue_number_goes_here> 🦕