ID CVE-2019-20477
Summary PyYAML 5.1 through 5.1.2 has insufficient restrictions on the load and load_all functions because of a class deserialization issue, e.g., Popen is a class in the subprocess module. NOTE: this issue exists because of an incomplete fix for CVE-2017-18342.
References
Vulnerable Configurations
  • cpe:2.3:a:pyyaml:pyyaml:5.1:-:*:*:*:*:*:*
    cpe:2.3:a:pyyaml:pyyaml:5.1:-:*:*:*:*:*:*
  • cpe:2.3:a:pyyaml:pyyaml:5.1:beta1:*:*:*:*:*:*
    cpe:2.3:a:pyyaml:pyyaml:5.1:beta1:*:*:*:*:*:*
  • cpe:2.3:a:pyyaml:pyyaml:5.1:beta2:*:*:*:*:*:*
    cpe:2.3:a:pyyaml:pyyaml:5.1:beta2:*:*:*:*:*:*
  • cpe:2.3:a:pyyaml:pyyaml:5.1:beta3:*:*:*:*:*:*
    cpe:2.3:a:pyyaml:pyyaml:5.1:beta3:*:*:*:*:*:*
  • cpe:2.3:a:pyyaml:pyyaml:5.1:beta4:*:*:*:*:*:*
    cpe:2.3:a:pyyaml:pyyaml:5.1:beta4:*:*:*:*:*:*
  • cpe:2.3:a:pyyaml:pyyaml:5.1:beta5:*:*:*:*:*:*
    cpe:2.3:a:pyyaml:pyyaml:5.1:beta5:*:*:*:*:*:*
  • cpe:2.3:a:pyyaml:pyyaml:5.1:beta6:*:*:*:*:*:*
    cpe:2.3:a:pyyaml:pyyaml:5.1:beta6:*:*:*:*:*:*
  • cpe:2.3:a:pyyaml:pyyaml:5.1:beta7:*:*:*:*:*:*
    cpe:2.3:a:pyyaml:pyyaml:5.1:beta7:*:*:*:*:*:*
  • cpe:2.3:a:pyyaml:pyyaml:5.1.1:*:*:*:*:*:*:*
    cpe:2.3:a:pyyaml:pyyaml:5.1.1:*:*:*:*:*:*:*
  • cpe:2.3:a:pyyaml:pyyaml:5.1.2:*:*:*:*:*:*:*
    cpe:2.3:a:pyyaml:pyyaml:5.1.2:*:*:*:*:*:*:*
  • cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:*
    cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:*
  • cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*
    cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*
CVSS
Base: 7.5 (as of 01-01-2022 - 19:38)
Impact:
Exploitability:
CWE CWE-502
CAPEC
  • Object Injection
    An adversary attempts to exploit an application by injecting additional, malicious content during its processing of serialized objects. Developers leverage serialization in order to convert data or state into a static, binary format for saving to disk or transferring over a network. These objects are then deserialized when needed to recover the data/state. By injecting a malformed object into a vulnerable application, an adversary can potentially compromise the application by manipulating the deserialization process. This can result in a number of unwanted outcomes, including remote code execution.
Access
VectorComplexityAuthentication
NETWORK LOW NONE
Impact
ConfidentialityIntegrityAvailability
PARTIAL PARTIAL PARTIAL
cvss-vector via4 AV:N/AC:L/Au:N/C:P/I:P/A:P
redhat via4
rpms
  • Cython-debugsource-0:0.29.14-4.module+el8.2.0+5234+f98739b6
  • PyYAML-debugsource-0:5.3.1-1.module+el8.3.0+7187+a27ec44b
  • numpy-debugsource-0:1.17.3-5.module+el8.3.0+7187+a27ec44b
  • python-cffi-debugsource-0:1.13.2-3.module+el8.2.0+5234+f98739b6
  • python-cryptography-debugsource-0:2.8-3.module+el8.2.0+5234+f98739b6
  • python-lxml-debugsource-0:4.4.1-4.module+el8.2.0+5234+f98739b6
  • python-markupsafe-debugsource-0:1.1.1-6.module+el8.2.0+5234+f98739b6
  • python-psutil-debugsource-0:5.6.4-3.module+el8.2.0+5234+f98739b6
  • python-psycopg2-debugsource-0:2.8.4-4.module+el8.2.0+5234+f98739b6
  • python38-0:3.8.3-3.module+el8.3.0+7680+79e7e61a
  • python38-Cython-0:0.29.14-4.module+el8.2.0+5234+f98739b6
  • python38-Cython-debuginfo-0:0.29.14-4.module+el8.2.0+5234+f98739b6
  • python38-PyMySQL-0:0.9.3-3.module+el8.2.0+5234+f98739b6
  • python38-asn1crypto-0:1.2.0-3.module+el8.2.0+5234+f98739b6
  • python38-babel-0:2.7.0-10.module+el8.2.0+5234+f98739b6
  • python38-cffi-0:1.13.2-3.module+el8.2.0+5234+f98739b6
  • python38-cffi-debuginfo-0:1.13.2-3.module+el8.2.0+5234+f98739b6
  • python38-chardet-0:3.0.4-19.module+el8.2.0+5234+f98739b6
  • python38-cryptography-0:2.8-3.module+el8.2.0+5234+f98739b6
  • python38-cryptography-debuginfo-0:2.8-3.module+el8.2.0+5234+f98739b6
  • python38-debug-0:3.8.3-3.module+el8.3.0+7680+79e7e61a
  • python38-debuginfo-0:3.8.3-3.module+el8.3.0+7680+79e7e61a
  • python38-debugsource-0:3.8.3-3.module+el8.3.0+7680+79e7e61a
  • python38-devel-0:3.8.3-3.module+el8.3.0+7680+79e7e61a
  • python38-idle-0:3.8.3-3.module+el8.3.0+7680+79e7e61a
  • python38-idna-0:2.8-6.module+el8.2.0+5234+f98739b6
  • python38-jinja2-0:2.10.3-4.module+el8.2.0+5234+f98739b6
  • python38-libs-0:3.8.3-3.module+el8.3.0+7680+79e7e61a
  • python38-lxml-0:4.4.1-4.module+el8.2.0+5234+f98739b6
  • python38-lxml-debuginfo-0:4.4.1-4.module+el8.2.0+5234+f98739b6
  • python38-markupsafe-0:1.1.1-6.module+el8.2.0+5234+f98739b6
  • python38-markupsafe-debuginfo-0:1.1.1-6.module+el8.2.0+5234+f98739b6
  • python38-mod_wsgi-0:4.6.8-3.module+el8.2.0+5234+f98739b6
  • python38-numpy-0:1.17.3-5.module+el8.3.0+7187+a27ec44b
  • python38-numpy-debuginfo-0:1.17.3-5.module+el8.3.0+7187+a27ec44b
  • python38-numpy-doc-0:1.17.3-5.module+el8.3.0+7187+a27ec44b
  • python38-numpy-f2py-0:1.17.3-5.module+el8.3.0+7187+a27ec44b
  • python38-pip-0:19.3.1-1.module+el8.3.0+7187+a27ec44b
  • python38-pip-wheel-0:19.3.1-1.module+el8.3.0+7187+a27ec44b
  • python38-ply-0:3.11-8.module+el8.2.0+5234+f98739b6
  • python38-psutil-0:5.6.4-3.module+el8.2.0+5234+f98739b6
  • python38-psutil-debuginfo-0:5.6.4-3.module+el8.2.0+5234+f98739b6
  • python38-psycopg2-0:2.8.4-4.module+el8.2.0+5234+f98739b6
  • python38-psycopg2-debuginfo-0:2.8.4-4.module+el8.2.0+5234+f98739b6
  • python38-psycopg2-doc-0:2.8.4-4.module+el8.2.0+5234+f98739b6
  • python38-psycopg2-tests-0:2.8.4-4.module+el8.2.0+5234+f98739b6
  • python38-pycparser-0:2.19-3.module+el8.2.0+5234+f98739b6
  • python38-pysocks-0:1.7.1-4.module+el8.2.0+5234+f98739b6
  • python38-pytz-0:2019.3-3.module+el8.2.0+5234+f98739b6
  • python38-pyyaml-0:5.3.1-1.module+el8.3.0+7187+a27ec44b
  • python38-pyyaml-debuginfo-0:5.3.1-1.module+el8.3.0+7187+a27ec44b
  • python38-requests-0:2.22.0-9.module+el8.2.0+5234+f98739b6
  • python38-rpm-macros-0:3.8.3-3.module+el8.3.0+7680+79e7e61a
  • python38-scipy-0:1.3.1-4.module+el8.2.0+5234+f98739b6
  • python38-scipy-debuginfo-0:1.3.1-4.module+el8.2.0+5234+f98739b6
  • python38-setuptools-0:41.6.0-4.module+el8.3.0+7187+a27ec44b
  • python38-setuptools-wheel-0:41.6.0-4.module+el8.3.0+7187+a27ec44b
  • python38-six-0:1.12.0-9.module+el8.2.0+5234+f98739b6
  • python38-test-0:3.8.3-3.module+el8.3.0+7680+79e7e61a
  • python38-tkinter-0:3.8.3-3.module+el8.3.0+7680+79e7e61a
  • python38-urllib3-0:1.25.7-4.module+el8.2.0+5234+f98739b6
  • python38-wheel-0:0.33.6-5.module+el8.3.0+7187+a27ec44b
  • python38-wheel-wheel-0:0.33.6-5.module+el8.3.0+7187+a27ec44b
  • scipy-debugsource-0:1.3.1-4.module+el8.2.0+5234+f98739b6
refmap via4
fedora
  • FEDORA-2020-3162499159
  • FEDORA-2020-e84e90dc4a
misc
Last major update 01-01-2022 - 19:38
Published 19-02-2020 - 04:15
Last modified 01-01-2022 - 19:38
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