CVE-2021-23239

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"value": "La personalidad sudoedit de Sudo versiones anteriores a 1.9.5, puede permitir a un usuario local poco privilegiado llevar a cabo pruebas arbitrarias de existencia de directorio al ganar una condici\u00f3n de carrera en el archivo sudo_edit.c al reemplazar un directorio controlado por el usuario por un enlace simb\u00f3lico a una ruta arbitraria"}], "id": "CVE-2021-23239", "lastModified": "2026-06-17T03:38:27.750", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "LOW", "cvssData": {"accessComplexity": "MEDIUM", "accessVector": "LOCAL", "authentication": "NONE", "availabilityImpact": "NONE", "baseScore": 1.9, "confidentialityImpact": "PARTIAL", "integrityImpact": "NONE", "vectorString": "AV:L/AC:M/Au:N/C:P/I:N/A:N", "version": "2.0"}, "exploitabilityScore": 3.4, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], 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{"affected_release": [{"advisory": "RHSA-2021:1723", "cpe": "cpe:/o:redhat:enterprise_linux:8", "package": "sudo-0:1.8.29-7.el8", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2021-05-18T00:00:00Z"}], "bugzilla": {"description": "sudo: possible directory existence test due to race condition in sudoedit", "id": "1915052", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1915052"}, "csaw": false, "cvss3": {"cvss3_base_score": "2.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N", "status": "verified"}, "cwe": "CWE-367->CWE-59->CWE-203", "details": ["The sudoedit personality of Sudo before 1.9.5 may allow a local unprivileged user to perform arbitrary directory-existence tests by winning a sudo_edit.c race condition in replacing a user-controlled directory by a symlink to an arbitrary path.", "A flaw was found in sudoedit. A race condition vulnerability and improper symbolic link resolution could be used by a local unprivileged user to test for the existence of directories and files not normally accessible to the user. This flaw cannot be used to read the content or write to arbitrary files on the file system. The highest threat from this vulnerability is to data confidentiality."], "mitigation": {"lang": "en:us", "value": "Enabling the symbolic link protection (/proc/sys/fs/protected_symlinks set to 1) is sufficient to mitigate this flaw."}, "name": "CVE-2021-23239", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:5", "fix_state": "Out of support scope", "package_name": "sudo", "product_name": "Red Hat Enterprise Linux 5"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "sudo", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "sudo", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "sudo", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2021-01-11T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2021-23239\nhttps://nvd.nist.gov/vuln/detail/CVE-2021-23239\nhttps://www.sudo.ws/stable.html#1.9.5"], "statement": "This flaw has been rated as having a security impact of Low. The symbolic link protection is enabled by default in Red Hat Enterprise Linux 7 and 8, preventing this issue from being exploited.", "threat_severity": "Low"}

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