PYSEC-2018-49

    Dashboard / Vulnerabilities / PYSEC-2018-49

    PYSEC-2018-49

    Published: 27 Jun 2018Last Modified: 8 Nov 2023

    Summary:

    Details: In PyYAML before 5.1, the yaml.load() API could execute arbitrary code if used with untrusted data. The load() function has been deprecated in version 5.1 and the 'UnsafeLoader' has been introduced for backward compatibility with the function.

    References: https://github.com/yaml/pyyaml/pull/74, https://github.com/yaml/pyyaml/blob/master/CHANGES, https://lists.fedoraproject.org/archives/list/[email protected]/message/M6JCFGEIEOFMWWIXGHSELMKQDD4CV2BA/, https://lists.fedoraproject.org/archives/list/[email protected]/message/KSQQMRUQSXBSUXLCRD3TSZYQ7SEZRKCE/, https://lists.fedoraproject.org/archives/list/[email protected]/message/JEX7IPV5P2QJITAMA5Z63GQCZA5I6NVZ/, https://github.com/yaml/pyyaml/wiki/PyYAML-yaml.load(input)-Deprecation, https://github.com/marshmallow-code/apispec/issues/278, https://github.com/yaml/pyyaml/issues/193, https://security.gentoo.org/glsa/202003-45, https://github.com/advisories/GHSA-rprw-h62v-c2w7

    Affected packages

    Package

    Name: pyyaml

    Purl: pkg:pypi/pyyaml

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -5.1

    Affected versions

    3.01

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High