Bug 2218241
| Summary: | CVE-2007-4559 python-pip: Python tarfile extraction needs change to avoid a warning (mitigation) [rhel-8.9.0] | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 8 | Reporter: | Charalampos Stratakis <cstratak> |
| Component: | python-pip | Assignee: | Petr Viktorin (pviktori) <pviktori> |
| Status: | CLOSED ERRATA | QA Contact: | Lukáš Zachar <lzachar> |
| Severity: | medium | Docs Contact: | |
| Priority: | medium | ||
| Version: | 8.9 | CC: | mcascell, pviktori, python-maint, rhel-cs-apps-subsystem-qe, torsava |
| Target Milestone: | rc | Keywords: | Security, SecurityTracking, Triaged |
| Target Release: | --- | ||
| Hardware: | Unspecified | ||
| OS: | Unspecified | ||
| Whiteboard: | |||
| Fixed In Version: | python-pip-9.0.3-23.el8 | Doc Type: | No Doc Update |
| Doc Text: | Story Points: | --- | |
| Clone Of: | 2207997 | Environment: | |
| Last Closed: | 2023-11-14 15:51:40 UTC | 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: | |||
| Bug Blocks: | 263261 | ||
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Comment 1
Charalampos Stratakis
2023-08-09 22:22:40 UTC
In order to test it:
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'))
"""
Do a python3 -m pip install evil.tar.gz
It will fail with: FileNotFoundError: [Errno 2] No such file or directory: '/tmp/pip-8lk56uxg-build/setup.py'
Whereas on the fixed pip it should reject the operation with:
"tarfile.OutsideDestinationError: 'tmp/poc' would be extracted to '/tmp/poc', which is outside the destination"
Verified on the PR. Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory (Moderate: python-pip security update), and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://access.redhat.com/errata/RHSA-2023:7176 |