vulnerability
Red Hat: CVE-2020-1747: CVE-2020-1747 PyYAML: arbitrary command execution through python/object/new when FullLoader is used (Multiple Advisories)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 10 | (AV:N/AC:L/Au:N/C:C/I:C/A:C) | Mar 24, 2020 | Nov 5, 2020 | Aug 11, 2025 |
Severity
10
CVSS
(AV:N/AC:L/Au:N/C:C/I:C/A:C)
Published
Mar 24, 2020
Added
Nov 5, 2020
Modified
Aug 11, 2025
Description
A vulnerability was discovered in the PyYAML library in versions before 5.3.1, where it is susceptible to arbitrary code execution when it processes untrusted YAML files through the full_load method or with the FullLoader loader. Applications that use the library to process untrusted input may be vulnerable to this flaw. An attacker could use this flaw to execute arbitrary code on the system by abusing the python/object/new constructor.
Solutions
redhat-upgrade-cython-debugsourceredhat-upgrade-numpy-debugsourceredhat-upgrade-python-cffi-debugsourceredhat-upgrade-python-cryptography-debugsourceredhat-upgrade-python-lxml-debugsourceredhat-upgrade-python-markupsafe-debugsourceredhat-upgrade-python-psutil-debugsourceredhat-upgrade-python-psycopg2-debugsourceredhat-upgrade-python38redhat-upgrade-python38-asn1cryptoredhat-upgrade-python38-babelredhat-upgrade-python38-cffiredhat-upgrade-python38-cffi-debuginforedhat-upgrade-python38-chardetredhat-upgrade-python38-cryptographyredhat-upgrade-python38-cryptography-debuginforedhat-upgrade-python38-cythonredhat-upgrade-python38-cython-debuginforedhat-upgrade-python38-debugredhat-upgrade-python38-debuginforedhat-upgrade-python38-debugsourceredhat-upgrade-python38-develredhat-upgrade-python38-idleredhat-upgrade-python38-idnaredhat-upgrade-python38-jinja2redhat-upgrade-python38-libsredhat-upgrade-python38-lxmlredhat-upgrade-python38-lxml-debuginforedhat-upgrade-python38-markupsaferedhat-upgrade-python38-markupsafe-debuginforedhat-upgrade-python38-mod_wsgiredhat-upgrade-python38-numpyredhat-upgrade-python38-numpy-debuginforedhat-upgrade-python38-numpy-docredhat-upgrade-python38-numpy-f2pyredhat-upgrade-python38-pipredhat-upgrade-python38-pip-wheelredhat-upgrade-python38-plyredhat-upgrade-python38-psutilredhat-upgrade-python38-psutil-debuginforedhat-upgrade-python38-psycopg2redhat-upgrade-python38-psycopg2-debuginforedhat-upgrade-python38-psycopg2-docredhat-upgrade-python38-psycopg2-testsredhat-upgrade-python38-pycparserredhat-upgrade-python38-pymysqlredhat-upgrade-python38-pysocksredhat-upgrade-python38-pytzredhat-upgrade-python38-pyyamlredhat-upgrade-python38-pyyaml-debuginforedhat-upgrade-python38-requestsredhat-upgrade-python38-rpm-macrosredhat-upgrade-python38-scipyredhat-upgrade-python38-scipy-debuginforedhat-upgrade-python38-setuptoolsredhat-upgrade-python38-setuptools-wheelredhat-upgrade-python38-sixredhat-upgrade-python38-testredhat-upgrade-python38-tkinterredhat-upgrade-python38-urllib3redhat-upgrade-python38-wheelredhat-upgrade-python38-wheel-wheelredhat-upgrade-pyyaml-debugsourceredhat-upgrade-scipy-debugsource
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