Path traversal protection in unzip to temp file

[ayushhgarg-work]

Fixes MSRC [110063] — two path traversal vulnerabilities in _local_job_invoker.py.

Fix 1: unzip_to_temporary_file now validates all ZIP member paths resolve within the target directory before extraction.

Fix 2: New _safe_tar_extractall helper replaces raw tarfile.extract() in copy_bootstrapper_from_container. Uses filter='data' on Python 3.12+; on older versions, manually blocks path traversal, symlinks, and hard links.

7 security regression tests added. All 10 tests passing, 0 regressions.

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[Copilot]

Pull request overview

This PR hardens azure-ai-ml local job execution utilities against archive extraction vulnerabilities (ZipSlip/TarSlip) by validating ZIP members before extraction and adding a safer TAR extraction helper, along with new unit tests for the security behavior.

Changes:

• Add ZIP member validation to block path traversal before extractall() in unzip_to_temporary_file.
• Introduce _safe_tar_extractall and use it when extracting the bootstrapper archive from a Docker container.
• Add unit tests covering ZIP/TAR path traversal and link-handling scenarios.

Reviewed changes

Copilot reviewed 2 out of 3 changed files in this pull request and generated 7 comments.

File	Description
sdk/ml/azure-ai-ml/azure/ai/ml/operations/_local_job_invoker.py	Adds ZIP path validation and a safe TAR extraction helper; switches bootstrapper extraction to use the safer path.
sdk/ml/azure-ai-ml/tests/job_common/unittests/test_local_job_invoker.py	Adds unit tests for ZIP/TAR extraction safety and related rejection cases.

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