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python: infinite loop in the tarfile module via crafted TAR archive

🗓️ 10 Nov 2020 13:51:00Reported by RedHatType 
redhat
 redhat🔗 access.redhat.com👁 8 Views

Python tarfile module may loop infinitely when opening crafted tar archives due to unvalidated pax headers.

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OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux7ppc64python0:2.7.5-90.el7python-0:2.7.5-90.el7.ppc64.rpm
Red Hat Enterprise Linux7ppc64lepython0:2.7.5-90.el7python-0:2.7.5-90.el7.ppc64le.rpm
Red Hat Enterprise Linux7s390xpython0:2.7.5-90.el7python-0:2.7.5-90.el7.s390x.rpm
Red Hat Enterprise Linux7x86_64python0:2.7.5-90.el7python-0:2.7.5-90.el7.x86_64.rpm
Red Hat Enterprise Linux7ppc64python-debug0:2.7.5-90.el7python-debug-0:2.7.5-90.el7.ppc64.rpm
Red Hat Enterprise Linux7ppc64lepython-debug0:2.7.5-90.el7python-debug-0:2.7.5-90.el7.ppc64le.rpm
Red Hat Enterprise Linux7s390xpython-debug0:2.7.5-90.el7python-debug-0:2.7.5-90.el7.s390x.rpm
Red Hat Enterprise Linux7x86_64python-debug0:2.7.5-90.el7python-debug-0:2.7.5-90.el7.x86_64.rpm
Red Hat Enterprise Linux7ppcpython-debuginfo0:2.7.5-90.el7python-debuginfo-0:2.7.5-90.el7.ppc.rpm
Red Hat Enterprise Linux7ppc64python-debuginfo0:2.7.5-90.el7python-debuginfo-0:2.7.5-90.el7.ppc64.rpm
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28 Jun 2026 12:33Current
6.8Medium risk
Vulners AI Score6.8
CVSS 25
CVSS 3.17.5
EPSS0.06304
CWE-835
pythontarfileinfinite loopheader validationpax headerunix
8