{ "id": "CVE-2020-1733", "sourceIdentifier": "secalert@redhat.com", "published": "2020-03-11T19:15:13.030", "lastModified": "2022-04-25T17:37:05.620", "vulnStatus": "Analyzed", "descriptions": [ { "lang": "en", "value": "A race condition flaw was found in Ansible Engine 2.7.17 and prior, 2.8.9 and prior, 2.9.6 and prior when running a playbook with an unprivileged become user. When Ansible needs to run a module with become user, the temporary directory is created in /var/tmp. This directory is created with \"umask 77 && mkdir -p \"; this operation does not fail if the directory already exists and is owned by another user. An attacker could take advantage to gain control of the become user as the target directory can be retrieved by iterating '/proc//cmdline'." }, { "lang": "es", "value": "Se encontr\u00f3 un fallo de condici\u00f3n de carrera en Ansible Engine versiones 2.7.17 y anteriores, 2.8.9 y anteriores, 2.9.6 y anteriores, cuando se ejecuta un playbook con un usuario convertido a no privilegiado. Cuando Ansible necesita ejecutar un m\u00f3dulo con un usuario convertido, el directorio temporal es creado en /var/tmp. Este directorio se crea con \"umask 77 && mkdir -p (dir)\"; Esta operaci\u00f3n no tiene un fallo si el directorio ya existe y es propiedad de otro usuario. Un atacante podr\u00eda tomar ventaja para tomar el control del usuario convertido, ya que el directorio de destino puede ser recuperado iterando \"/proc//cmdline\"." } ], "metrics": { "cvssMetricV31": [ { "source": "nvd@nist.gov", "type": "Primary", "cvssData": { "version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:L", "attackVector": "LOCAL", "attackComplexity": "HIGH", "privilegesRequired": "LOW", "userInteraction": "REQUIRED", "scope": "CHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "LOW", "baseScore": 5.0, "baseSeverity": "MEDIUM" }, "exploitabilityScore": 0.8, "impactScore": 3.7 } ], "cvssMetricV30": [ { "source": "secalert@redhat.com", "type": "Secondary", "cvssData": { "version": "3.0", "vectorString": "CVSS:3.0/AV:L/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:L", "attackVector": "LOCAL", "attackComplexity": "HIGH", "privilegesRequired": "LOW", "userInteraction": "REQUIRED", "scope": "CHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "LOW", "baseScore": 5.0, "baseSeverity": "MEDIUM" }, "exploitabilityScore": 0.8, "impactScore": 3.7 } ], "cvssMetricV2": [ { "source": "nvd@nist.gov", "type": "Primary", "cvssData": { "version": "2.0", "vectorString": "AV:L/AC:H/Au:N/C:P/I:P/A:P", "accessVector": "LOCAL", "accessComplexity": "HIGH", "authentication": "NONE", "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "availabilityImpact": "PARTIAL", "baseScore": 3.7 }, "baseSeverity": "LOW", "exploitabilityScore": 1.9, "impactScore": 6.4, "acInsufInfo": false, "obtainAllPrivilege": false, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": true } ] }, "weaknesses": [ { "source": "nvd@nist.gov", "type": "Primary", "description": [ { "lang": "en", "value": "CWE-362" } ] }, { "source": "secalert@redhat.com", "type": "Secondary", "description": [ { "lang": "en", "value": "CWE-377" } ] } ], "configurations": [ { "nodes": [ { 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"vulnerable": true, "criteria": "cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*", "matchCriteriaId": "80F0FA5D-8D3B-4C0E-81E2-87998286AF33" }, { "vulnerable": true, "criteria": "cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*", "matchCriteriaId": "36D96259-24BD-44E2-96D9-78CE1D41F956" } ] } ] }, { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*", "matchCriteriaId": "C11E6FB0-C8C0-4527-9AA0-CB9B316F8F43" }, { "vulnerable": true, "criteria": "cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*", "matchCriteriaId": "07B237A9-69A3-4A9C-9DA0-4E06BD37AE73" } ] } ] } ], "references": [ { "url": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-1733", "source": "secalert@redhat.com", "tags": [ "Issue Tracking", "Vendor Advisory" ] }, { "url": "https://github.com/ansible/ansible/issues/67791", "source": "secalert@redhat.com", "tags": [ "Exploit", "Third Party Advisory" ] }, { "url": "https://lists.debian.org/debian-lts-announce/2020/05/msg00005.html", "source": "secalert@redhat.com", "tags": [ "Mailing List", "Third Party Advisory" ] }, { "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/DKPA4KC3OJSUFASUYMG66HKJE7ADNGFW/", "source": "secalert@redhat.com", "tags": [ "Mailing List", "Third Party Advisory" ] }, { "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MRRYUU5ZBLPBXCYG6CFP35D64NP2UB2S/", "source": "secalert@redhat.com", "tags": [ "Mailing List", "Third Party Advisory" ] }, { "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WQVOQD4VAIXXTVQAJKTN7NUGTJFE2PCB/", "source": "secalert@redhat.com", "tags": [ "Mailing List", "Third Party Advisory" ] }, { "url": "https://security.gentoo.org/glsa/202006-11", "source": "secalert@redhat.com", "tags": [ "Third Party Advisory" ] }, { "url": "https://www.debian.org/security/2021/dsa-4950", "source": "secalert@redhat.com", "tags": [ "Third Party Advisory" ] } ] }