Vulnerabilities
Misconfiguration
Compliance
CVE Vulnerabilities

CVE-2019-20907

Loop with Unreachable Exit Condition ('Infinite Loop')

Published: Jul 13, 2020 | Modified: Nov 21, 2024
CVSS 3.x
7.5
HIGH
Source:
NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 2.x
5 MEDIUM
AV:N/AC:L/Au:N/C:N/I:N/A:P
RedHat/V2
RedHat/V3
7.5 MODERATE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Ubuntu
MEDIUM
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Additional information
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2019-20907
CWEhttps://cwe.mitre.org/data/definitions/835.html

In Lib/tarfile.py in Python through 3.8.3, an attacker is able to craft a TAR archive leading to an infinite loop when opened by tarfile.open, because _proc_pax lacks header validation.

Weakness

The product contains an iteration or loop with an exit condition that cannot be reached, i.e., an infinite loop.

Affected Software

NameVendorStart VersionEnd Version
PythonPython3.5.0 (including)3.5.10 (excluding)
PythonPython3.6.0 (including)3.6.12 (excluding)
PythonPython3.7.0 (including)3.7.9 (excluding)
PythonPython3.8.0 (including)3.8.5 (excluding)
Red Hat Enterprise Linux 7RedHatpython-0:2.7.5-90.el7*
Red Hat Enterprise Linux 7RedHatpython3-0:3.6.8-18.el7*
Red Hat Enterprise Linux 7.4 Advanced Update SupportRedHatpython-0:2.7.5-64.el7_4*
Red Hat Enterprise Linux 7.4 Telco Extended Update SupportRedHatpython-0:2.7.5-64.el7_4*
Red Hat Enterprise Linux 7.4 Update Services for SAP SolutionsRedHatpython-0:2.7.5-64.el7_4*
Red Hat Enterprise Linux 7.6 Extended Update SupportRedHatpython-0:2.7.5-84.el7_6*
Red Hat Enterprise Linux 7.7 Extended Update SupportRedHatpython-0:2.7.5-88.el7_7*
Red Hat Enterprise Linux 8RedHatpython3-0:3.6.8-31.el8*
Red Hat Enterprise Linux 8RedHatpython38:3.8-8030020200818121840.4190259b*
Red Hat Enterprise Linux 8RedHatpython27:2.7-8030020200819165638.851f4228*
Red Hat Enterprise Linux 8RedHatpython3-0:3.6.8-31.el8*
Red Hat OpenShift DoRedHatopenshiftdo/odo-init-image-rhel7:1.1.3-2*
Red Hat Software Collections for Red Hat Enterprise Linux 6RedHatrh-python36-python-0:3.6.12-1.el6*
Red Hat Software Collections for Red Hat Enterprise Linux 6RedHatrh-python36-python-pip-0:9.0.1-5.el6*
Red Hat Software Collections for Red Hat Enterprise Linux 6RedHatrh-python36-python-virtualenv-0:15.1.0-3.el6*
Red Hat Software Collections for Red Hat Enterprise Linux 7RedHatpython27-python-0:2.7.18-2.el7*
Red Hat Software Collections for Red Hat Enterprise Linux 7RedHatpython27-python-pip-0:8.1.2-6.el7*
Red Hat Software Collections for Red Hat Enterprise Linux 7RedHatpython27-python-virtualenv-0:13.1.0-4.el7*
Red Hat Software Collections for Red Hat Enterprise Linux 7RedHatrh-python36-python-0:3.6.12-1.el7*
Red Hat Software Collections for Red Hat Enterprise Linux 7RedHatrh-python36-python-pip-0:9.0.1-5.el7*
Red Hat Software Collections for Red Hat Enterprise Linux 7RedHatrh-python36-python-virtualenv-0:15.1.0-3.el7*
Red Hat Software Collections for Red Hat Enterprise Linux 7RedHatrh-python38-python-0:3.8.6-1.el7*
Red Hat Software Collections for Red Hat Enterprise Linux 7RedHatrh-python38-python-psutil-0:5.6.4-5.el7*
Red Hat Software Collections for Red Hat Enterprise Linux 7RedHatrh-python38-python-urllib3-0:1.25.7-6.el7*
Red Hat Software Collections for Red Hat Enterprise Linux 7.6 EUSRedHatpython27-python-0:2.7.18-2.el7*
Red Hat Software Collections for Red Hat Enterprise Linux 7.6 EUSRedHatpython27-python-pip-0:8.1.2-6.el7*
Red Hat Software Collections for Red Hat Enterprise Linux 7.6 EUSRedHatpython27-python-virtualenv-0:13.1.0-4.el7*
Red Hat Software Collections for Red Hat Enterprise Linux 7.6 EUSRedHatrh-python36-python-0:3.6.12-1.el7*
Red Hat Software Collections for Red Hat Enterprise Linux 7.6 EUSRedHatrh-python36-python-pip-0:9.0.1-5.el7*
Red Hat Software Collections for Red Hat Enterprise Linux 7.6 EUSRedHatrh-python36-python-virtualenv-0:15.1.0-3.el7*
Red Hat Software Collections for Red Hat Enterprise Linux 7.6 EUSRedHatrh-python38-python-0:3.8.6-1.el7*
Red Hat Software Collections for Red Hat Enterprise Linux 7.6 EUSRedHatrh-python38-python-psutil-0:5.6.4-5.el7*
Red Hat Software Collections for Red Hat Enterprise Linux 7.6 EUSRedHatrh-python38-python-urllib3-0:1.25.7-6.el7*
Red Hat Software Collections for Red Hat Enterprise Linux 7.7 EUSRedHatpython27-python-0:2.7.18-2.el7*
Red Hat Software Collections for Red Hat Enterprise Linux 7.7 EUSRedHatpython27-python-pip-0:8.1.2-6.el7*
Red Hat Software Collections for Red Hat Enterprise Linux 7.7 EUSRedHatpython27-python-virtualenv-0:13.1.0-4.el7*
Red Hat Software Collections for Red Hat Enterprise Linux 7.7 EUSRedHatrh-python36-python-0:3.6.12-1.el7*
Red Hat Software Collections for Red Hat Enterprise Linux 7.7 EUSRedHatrh-python36-python-pip-0:9.0.1-5.el7*
Red Hat Software Collections for Red Hat Enterprise Linux 7.7 EUSRedHatrh-python36-python-virtualenv-0:15.1.0-3.el7*
Red Hat Software Collections for Red Hat Enterprise Linux 7.7 EUSRedHatrh-python38-python-0:3.8.6-1.el7*
Red Hat Software Collections for Red Hat Enterprise Linux 7.7 EUSRedHatrh-python38-python-psutil-0:5.6.4-5.el7*
Red Hat Software Collections for Red Hat Enterprise Linux 7.7 EUSRedHatrh-python38-python-urllib3-0:1.25.7-6.el7*
Python2.7Ubuntubionic*
Python2.7Ubuntueoan*
Python2.7Ubuntuesm-apps/focal*
Python2.7Ubuntuesm-infra-legacy/trusty*
Python2.7Ubuntuesm-infra/bionic*
Python2.7Ubuntuesm-infra/xenial*
Python2.7Ubuntufocal*
Python2.7Ubuntugroovy*
Python2.7Ubuntuhirsute*
Python2.7Ubuntuimpish*
Python2.7Ubuntutrusty*
Python2.7Ubuntutrusty/esm*
Python2.7Ubuntuxenial*
Python3.4Ubuntuesm-infra-legacy/trusty*
Python3.4Ubuntutrusty*
Python3.4Ubuntutrusty/esm*
Python3.5Ubuntuesm-infra-legacy/trusty*
Python3.5Ubuntuesm-infra/xenial*
Python3.5Ubuntutrusty*
Python3.5Ubuntutrusty/esm*
Python3.5Ubuntuxenial*
Python3.6Ubuntubionic*
Python3.6Ubuntuesm-infra/bionic*
Python3.7Ubuntubionic*
Python3.7Ubuntueoan*
Python3.7Ubuntuesm-apps/bionic*
Python3.8Ubuntubionic*
Python3.8Ubuntueoan*
Python3.8Ubuntuesm-apps/bionic*
Python3.8Ubuntuesm-infra/focal*
Python3.8Ubuntufocal*
Python3.8Ubuntuupstream*

References

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