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{"acknowledgement": "This issue was discovered by Riccardo Schirone (Red Hat).", "affected_release": [{"advisory": "RHSA-2020:4641", "cpe": "cpe:/a:redhat:enterprise_linux:8", "package": "python38:3.8-8030020200818121840.4190259b", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2020-11-04T00:00:00Z"}], "bugzilla": {"description": "PyYAML: arbitrary command execution through python/object/new when FullLoader is used", "id": "1807367", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1807367"}, "csaw": false, "cvss3": {"cvss3_base_score": "9.8", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "status": "verified"}, "cwe": "CWE-20", "details": ["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.", "A vulnerability was discovered in the PyYAML library, 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."], "mitigation": {"lang": "en:us", "value": "Use `yaml.safe_load` or the SafeLoader loader when you parse untrusted input."}, "name": "CVE-2020-1747", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "PyYAML", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "PyYAML", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "python27:2.7/PyYAML", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "PyYAML", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "PyYAML", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/a:redhat:openstack:10", "fix_state": "Not affected", "package_name": "PyYAML", "product_name": "Red Hat OpenStack Platform 10 (Newton)"}, {"cpe": "cpe:/a:redhat:openstack:13", "fix_state": "Not affected", "package_name": "PyYAML", "product_name": "Red Hat OpenStack Platform 13 (Queens)"}, {"cpe": "cpe:/a:redhat:quay:3", "fix_state": "Will not fix", "package_name": "python-PyYAML", "product_name": "Red Hat Quay 3"}, {"cpe": "cpe:/a:redhat:rhel_software_collections:3", "fix_state": "Not affected", "package_name": "python27-PyYAML", "product_name": "Red Hat Software Collections"}, {"cpe": "cpe:/a:redhat:rhel_software_collections:3", "fix_state": "Not affected", "package_name": "rh-python36-PyYAML", "product_name": "Red Hat Software Collections"}, {"cpe": "cpe:/a:redhat:rhel_software_collections:3", "fix_state": "Affected", "package_name": "rh-python38-PyYAML", "product_name": "Red Hat Software Collections"}], "public_date": "2020-03-02T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2020-1747\nhttps://nvd.nist.gov/vuln/detail/CVE-2020-1747"], "statement": "Red Hat Quay 3.2 uses the vulnerable load function, but only to parse the Nginx configuration file, which only contains trusted data.", "threat_severity": "Moderate", "upstream_fix": "PyYAML 5.3.1"}