CVE-2017-18342

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The load() function has been deprecated in version 5.1 and the 'UnsafeLoader' has been introduced for backward compatibility with the function."}, {"lang": "es", "value": "En PyYAML en versiones anteriores a 5.1, la API yaml.load () podr\u00eda ejecutar c\u00f3digo arbitrario si se usara con datos no confiables. La funci\u00f3n load () ha quedado en desuso en la versi\u00f3n 5.1 y se ha introducido el \"UnsafeLoader\" para una compatibilidad hacia atr\u00e1s con la funci\u00f3n."}], "id": "CVE-2017-18342", "lastModified": "2026-06-17T01:12:39.040", "metrics": {"cvssMetricV2": [{"acInsufInfo": true, "baseSeverity": "HIGH", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 7.5, "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "version": "2.0"}, "exploitabilityScore": 10.0, "impactScore": 6.4, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.8, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2018-06-27T12:29:00.210", "references": [{"source": "cve@mitre.org", "tags": ["Third Party Advisory"], "url": "https://github.com/marshmallow-code/apispec/issues/278"}, {"source": "cve@mitre.org", "tags": ["Release Notes", "Third Party Advisory"], "url": "https://github.com/yaml/pyyaml/blob/master/CHANGES"}, {"source": "cve@mitre.org", "tags": ["Third Party Advisory"], "url": "https://github.com/yaml/pyyaml/issues/193"}, {"source": "cve@mitre.org", "tags": ["Patch", "Third Party Advisory"], "url": "https://github.com/yaml/pyyaml/pull/74"}, {"source": "cve@mitre.org", "url": "https://github.com/yaml/pyyaml/wiki/PyYAML-yaml.load%28input%29-Deprecation"}, {"source": "cve@mitre.org", "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JEX7IPV5P2QJITAMA5Z63GQCZA5I6NVZ/"}, {"source": "cve@mitre.org", "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KSQQMRUQSXBSUXLCRD3TSZYQ7SEZRKCE/"}, {"source": "cve@mitre.org", "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/M6JCFGEIEOFMWWIXGHSELMKQDD4CV2BA/"}, {"source": "cve@mitre.org", "tags": ["Third Party Advisory"], "url": "https://security.gentoo.org/glsa/202003-45"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://github.com/marshmallow-code/apispec/issues/278"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Release Notes", "Third Party Advisory"], "url": "https://github.com/yaml/pyyaml/blob/master/CHANGES"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://github.com/yaml/pyyaml/issues/193"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "Third Party Advisory"], "url": "https://github.com/yaml/pyyaml/pull/74"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://github.com/yaml/pyyaml/wiki/PyYAML-yaml.load%28input%29-Deprecation"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JEX7IPV5P2QJITAMA5Z63GQCZA5I6NVZ/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KSQQMRUQSXBSUXLCRD3TSZYQ7SEZRKCE/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/M6JCFGEIEOFMWWIXGHSELMKQDD4CV2BA/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://security.gentoo.org/glsa/202003-45"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-502"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "PyYAML: yaml.load() API could execute arbitrary code", "id": "1595743", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1595743"}, "csaw": false, "cvss3": {"cvss3_base_score": "8.1", "cvss3_scoring_vector": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-20", "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."], "name": "CVE-2017-18342", "package_state": [{"cpe": "cpe:/a:redhat:ceph_storage:1.3", "fix_state": "Will not fix", "package_name": "PyYAML", "product_name": "Red Hat Ceph Storage 1.3"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Will not fix", "package_name": "PyYAML", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Will not fix", "package_name": "PyYAML", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Will not fix", "package_name": "PyYAML", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/a:redhat:openstack:7", "fix_state": "Will not fix", "package_name": "PyYAML", "product_name": "Red Hat Enterprise Linux OpenStack Platform 7 (Kilo)"}, {"cpe": "cpe:/a:redhat:enterprise_mrg:2", "fix_state": "Will not fix", "package_name": "PyYAML", "product_name": "Red Hat Enterprise MRG 2"}, {"cpe": "cpe:/a:redhat:openstack:10", "fix_state": "Will not fix", "package_name": "PyYAML", "product_name": "Red Hat OpenStack Platform 10 (Newton)"}, {"cpe": "cpe:/a:redhat:openstack:12", "fix_state": "Will not fix", "package_name": "PyYAML", "product_name": "Red Hat OpenStack Platform 12 (Pike)"}, {"cpe": "cpe:/a:redhat:openstack:13", "fix_state": "Will not fix", "package_name": "PyYAML", "product_name": "Red Hat OpenStack Platform 13 (Queens)"}, {"cpe": "cpe:/a:redhat:openstack:15", "fix_state": "Not affected", "package_name": "PyYAML", "product_name": "Red Hat OpenStack Platform 15 (Stein)"}, {"cpe": "cpe:/a:redhat:openstack:8", "fix_state": "Will not fix", "package_name": "PyYAML", "product_name": "Red Hat OpenStack Platform 8 (Liberty)"}, {"cpe": "cpe:/a:redhat:openstack:9", "fix_state": "Will not fix", "package_name": "PyYAML", "product_name": "Red Hat OpenStack Platform 9 (Mitaka)"}, {"cpe": "cpe:/a:redhat:network_satellite:5", "fix_state": "Will not fix", "package_name": "PyYAML", "product_name": "Red Hat Satellite 5"}, {"cpe": "cpe:/a:redhat:rhel_software_collections:3", "fix_state": "Will not fix", "package_name": "python27-PyYAML", "product_name": "Red Hat Software Collections"}, {"cpe": "cpe:/a:redhat:rhel_software_collections:3", "fix_state": "Will not fix", "package_name": "rh-python36-PyYAML", "product_name": "Red Hat Software Collections"}], "public_date": "2018-06-27T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2017-18342\nhttps://nvd.nist.gov/vuln/detail/CVE-2017-18342"], "statement": "PyYAML in channels for Red Hat MRG Messaging 2 should no longer be used, as a newer version is now available in Red Hat Enterprise Linux. Newer packages should be consumed from Red Hat Enterprise Linux channels.\nThis issue affects the versions of the PyYAML package as shipped with Red Hat Satellite 5. However, this flaw is not known to be exploitable under any supported scenario in Satellite 5. A future update may address this issue.\nThe PyYAML libary that is provided in the Red Hat OpenStack repositories is vulnerable. However, there are no instances where this library is used in a way which exposes the vulnerability. Any updates will be through the RHEL channels.", "threat_severity": "Moderate"}

{}