CVE-2021-35939

{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"state": "PUBLISHED", "cveId": "CVE-2021-35939", "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "assignerShortName": "redhat", "dateUpdated": "2024-08-04T00:40:47.449Z", "dateReserved": "2021-06-29T00:00:00.000Z", "datePublished": "2022-08-26T00:00:00.000Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "shortName": "redhat", "dateUpdated": "2022-10-31T00:00:00.000Z"}, "descriptions": [{"lang": "en", "value": "It was found that the fix for CVE-2017-7500 and CVE-2017-7501 was incomplete: the check was only implemented for the parent directory of the file to be created. A local unprivileged user who owns another ancestor directory could potentially use this flaw to gain root privileges. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability."}], "affected": [{"vendor": "n/a", "product": "RPM", "versions": [{"version": "Fixed in RPM-v4.18", "status": "affected"}]}], "references": [{"url": "https://rpm.org/wiki/Releases/4.18.0"}, {"url": "https://github.com/rpm-software-management/rpm/pull/1919"}, {"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1964129"}, {"url": "https://github.com/rpm-software-management/rpm/commit/96ec957e281220f8e137a2d5eb23b83a6377d556"}, {"url": "https://access.redhat.com/security/cve/CVE-2021-35939"}, {"name": "GLSA-202210-22", "tags": ["vendor-advisory"], "url": "https://security.gentoo.org/glsa/202210-22"}], "problemTypes": [{"descriptions": [{"type": "CWE", "lang": "en", "description": "CWE-59 - Improper Link Resolution Before File Access ('Link Following')", "cweId": "CWE-59"}]}]}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T00:40:47.449Z"}, "title": "CVE Program Container", "references": [{"url": "https://rpm.org/wiki/Releases/4.18.0", "tags": ["x_transferred"]}, {"url": "https://github.com/rpm-software-management/rpm/pull/1919", "tags": ["x_transferred"]}, {"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1964129", "tags": ["x_transferred"]}, {"url": "https://github.com/rpm-software-management/rpm/commit/96ec957e281220f8e137a2d5eb23b83a6377d556", "tags": ["x_transferred"]}, {"url": "https://access.redhat.com/security/cve/CVE-2021-35939", "tags": ["x_transferred"]}, {"name": "GLSA-202210-22", "tags": ["vendor-advisory", "x_transferred"], "url": "https://security.gentoo.org/glsa/202210-22"}]}]}}

{}

{"affected": [{"affectedData": [{"product": "RPM", "vendor": "n/a", "versions": [{"status": "affected", "version": "Fixed in RPM-v4.18"}]}], "source": "secalert@redhat.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:rpm:rpm:*:*:*:*:*:*:*:*", "matchCriteriaId": "582D14B9-3812-42FD-9FA3-2BDEAA02DD6C", "versionEndExcluding": "4.18", "vulnerable": true}], "negate": false, "operator": "OR"}]}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*", "matchCriteriaId": "F4CFF558-3C47-480D-A2F0-BABF26042943", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "It was found that the fix for CVE-2017-7500 and CVE-2017-7501 was incomplete: the check was only implemented for the parent directory of the file to be created. A local unprivileged user who owns another ancestor directory could potentially use this flaw to gain root privileges. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability."}, {"lang": "es", "value": "Se ha detectado que la correcci\u00f3n de CVE-2017-7500 y CVE-2017-7501 era incompleta: la comprobaci\u00f3n s\u00f3lo es implementada para el directorio padre del archivo que iba a crearse. Un usuario local no privilegiado que posea otro directorio antecesor podr\u00eda usar este fallo para conseguir privilegios de root. La mayor amenaza de esta vulnerabilidad es para la confidencialidad e integridad de los datos, as\u00ed como para la disponibilidad del sistema."}], "id": "CVE-2021-35939", "lastModified": "2026-06-17T03:57:57.940", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 6.7, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "HIGH", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 0.8, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2022-08-26T16:15:08.683", "references": [{"source": "secalert@redhat.com", "tags": ["Third Party Advisory"], "url": "https://access.redhat.com/security/cve/CVE-2021-35939"}, {"source": "secalert@redhat.com", "tags": ["Exploit", "Issue Tracking", "Third Party Advisory"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1964129"}, {"source": "secalert@redhat.com", "tags": ["Patch", "Third Party Advisory"], "url": "https://github.com/rpm-software-management/rpm/commit/96ec957e281220f8e137a2d5eb23b83a6377d556"}, {"source": "secalert@redhat.com", "tags": ["Patch", "Third Party Advisory"], "url": "https://github.com/rpm-software-management/rpm/pull/1919"}, {"source": "secalert@redhat.com", "tags": ["Release Notes", "Vendor Advisory"], "url": "https://rpm.org/wiki/Releases/4.18.0"}, {"source": "secalert@redhat.com", "tags": ["Third Party Advisory"], "url": "https://security.gentoo.org/glsa/202210-22"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://access.redhat.com/security/cve/CVE-2021-35939"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Issue Tracking", "Third Party Advisory"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1964129"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "Third Party Advisory"], "url": "https://github.com/rpm-software-management/rpm/commit/96ec957e281220f8e137a2d5eb23b83a6377d556"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "Third Party Advisory"], "url": "https://github.com/rpm-software-management/rpm/pull/1919"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Release Notes", "Vendor Advisory"], "url": "https://rpm.org/wiki/Releases/4.18.0"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://security.gentoo.org/glsa/202210-22"}], "sourceIdentifier": "secalert@redhat.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-59"}], "source": "secalert@redhat.com", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-59"}], "source": "nvd@nist.gov", "type": "Secondary"}]}

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Linux 9", "release_date": "2024-01-25T00:00:00Z"}, {"advisory": "RHSA-2024:0463", "cpe": "cpe:/o:redhat:enterprise_linux:9", "package": "rpm-0:4.16.1.3-27.el9_3", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2024-01-25T00:00:00Z"}, {"advisory": "RHSA-2024:0435", "cpe": "cpe:/a:redhat:rhel_eus:9.0", "package": "rpm-0:4.16.1.3-14.el9_0.1", "product_name": "Red Hat Enterprise Linux 9.0 Extended Update Support", "release_date": "2024-01-25T00:00:00Z"}, {"advisory": "RHSA-2024:0453", "cpe": "cpe:/a:redhat:rhel_eus:9.2", "package": "rpm-0:4.16.1.3-24.el9_2", "product_name": "Red Hat Enterprise Linux 9.2 Extended Update Support", "release_date": "2024-01-25T00:00:00Z"}, {"advisory": "RHSA-2024:1477", "cpe": "cpe:/a:redhat:openshift:4.13::el9", "package": "openshift4-wincw/windows-machine-config-operator-bundle:v8.1.2-13", "product_name": "Red Hat OpenShift Container Platform 4.13", "release_date": "2024-03-25T00:00:00Z"}, {"advisory": "RHSA-2024:1477", "cpe": "cpe:/a:redhat:openshift:4.13::el9", "package": "openshift4-wincw/windows-machine-config-rhel9-operator:8.1.2-13", "product_name": "Red Hat OpenShift Container Platform 4.13", "release_date": "2024-03-25T00:00:00Z"}, {"advisory": "RHSA-2024:1383", "cpe": "cpe:/a:redhat:openshift_data_foundation:4.15::el9", "package": "odf4/cephcsi-rhel9:v4.15.0-37", "product_name": "RHODF-4.15-RHEL-9", "release_date": "2024-03-19T00:00:00Z"}, {"advisory": "RHSA-2024:1383", "cpe": "cpe:/a:redhat:openshift_data_foundation:4.15::el9", "package": "odf4/mcg-core-rhel9:v4.15.0-68", "product_name": "RHODF-4.15-RHEL-9", "release_date": "2024-03-19T00:00:00Z"}, {"advisory": "RHSA-2024:1383", "cpe": "cpe:/a:redhat:openshift_data_foundation:4.15::el9", "package": "odf4/mcg-operator-bundle:v4.15.0-158", "product_name": "RHODF-4.15-RHEL-9", "release_date": "2024-03-19T00:00:00Z"}, {"advisory": "RHSA-2024:1383", "cpe": "cpe:/a:redhat:openshift_data_foundation:4.15::el9", "package": 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"odf4/odf-cosi-sidecar-rhel9:v4.15.0-6", "product_name": "RHODF-4.15-RHEL-9", "release_date": "2024-03-19T00:00:00Z"}, {"advisory": "RHSA-2024:1383", "cpe": "cpe:/a:redhat:openshift_data_foundation:4.15::el9", "package": "odf4/odf-csi-addons-operator-bundle:v4.15.0-158", "product_name": "RHODF-4.15-RHEL-9", "release_date": "2024-03-19T00:00:00Z"}, {"advisory": "RHSA-2024:1383", "cpe": "cpe:/a:redhat:openshift_data_foundation:4.15::el9", "package": "odf4/odf-csi-addons-rhel9-operator:v4.15.0-15", "product_name": "RHODF-4.15-RHEL-9", "release_date": "2024-03-19T00:00:00Z"}, {"advisory": "RHSA-2024:1383", "cpe": "cpe:/a:redhat:openshift_data_foundation:4.15::el9", "package": "odf4/odf-csi-addons-sidecar-rhel9:v4.15.0-15", "product_name": "RHODF-4.15-RHEL-9", "release_date": "2024-03-19T00:00:00Z"}, {"advisory": "RHSA-2024:1383", "cpe": "cpe:/a:redhat:openshift_data_foundation:4.15::el9", "package": "odf4/odf-multicluster-console-rhel9:v4.15.0-54", "product_name": "RHODF-4.15-RHEL-9", 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"cpe:/a:redhat:openshift_data_foundation:4.15::el9", "package": "odf4/odf-rhel9-operator:v4.15.0-19", "product_name": "RHODF-4.15-RHEL-9", "release_date": "2024-03-19T00:00:00Z"}, {"advisory": "RHSA-2024:1383", "cpe": "cpe:/a:redhat:openshift_data_foundation:4.15::el9", "package": "odf4/odr-cluster-operator-bundle:v4.15.0-158", "product_name": "RHODF-4.15-RHEL-9", "release_date": "2024-03-19T00:00:00Z"}, {"advisory": "RHSA-2024:1383", "cpe": "cpe:/a:redhat:openshift_data_foundation:4.15::el9", "package": "odf4/odr-hub-operator-bundle:v4.15.0-158", "product_name": "RHODF-4.15-RHEL-9", "release_date": "2024-03-19T00:00:00Z"}, {"advisory": "RHSA-2024:1383", "cpe": "cpe:/a:redhat:openshift_data_foundation:4.15::el9", "package": "odf4/odr-rhel9-operator:v4.15.0-21", "product_name": "RHODF-4.15-RHEL-9", "release_date": "2024-03-19T00:00:00Z"}, {"advisory": "RHSA-2024:1383", "cpe": "cpe:/a:redhat:openshift_data_foundation:4.15::el9", "package": "odf4/rook-ceph-rhel9-operator:v4.15.0-103", "product_name": "RHODF-4.15-RHEL-9", "release_date": "2024-03-19T00:00:00Z"}], "bugzilla": {"description": "rpm: checks for unsafe symlinks are not performed for intermediary directories", "id": "1964129", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1964129"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H", "status": "verified"}, "cwe": "CWE-59", "details": ["It was found that the fix for CVE-2017-7500 and CVE-2017-7501 was incomplete: the check was only implemented for the parent directory of the file to be created. A local unprivileged user who owns another ancestor directory could potentially use this flaw to gain root privileges. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.", "It was found that the fix for CVE-2017-7500 and CVE-2017-7501 was incomplete: the check was only implemented for the parent directory of the file to be created. A local unprivileged user who owns another ancestor directory could potentially use this flaw to gain root privileges. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability."], "mitigation": {"lang": "en:us", "value": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability."}, "name": "CVE-2021-35939", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "rpm", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "rpm", "product_name": "Red Hat Enterprise Linux 7"}], "public_date": "2021-06-30T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2021-35939\nhttps://nvd.nist.gov/vuln/detail/CVE-2021-35939\nhttps://rpm.org/wiki/Releases/4.18.0"], "statement": "System and service accounts may have the required permissions to exploit this flaw. Conversely, regular user accounts should not be allowed to manipulate RPM artifacts during installation, thus reducing the attack surface and hence the impact of this flaw considerably.", "threat_severity": "Moderate"}

{}