CVE-2019-19882

{"id": "CVE-2019-19882", "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 6.9, "accessVector": "LOCAL", "vectorString": "AV:L/AC:M/Au:N/C:C/I:C/A:C", "authentication": "NONE", "integrityImpact": "COMPLETE", "accessComplexity": "MEDIUM", "availabilityImpact": "COMPLETE", "confidentialityImpact": "COMPLETE"}, "acInsufInfo": false, "impactScore": 10.0, "baseSeverity": "MEDIUM", "obtainAllPrivilege": false, "exploitabilityScore": 3.4, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 1.8}]}, "published": "2019-12-18T16:15:26.963", "references": [{"url": "https://bugs.archlinux.org/task/64836", "tags": ["Exploit", "Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "https://bugs.gentoo.org/702252", "tags": ["Exploit", "Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "https://github.com/shadow-maint/shadow/commit/edf7547ad5aa650be868cf2dac58944773c12d75", "tags": ["Patch", "Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "https://github.com/shadow-maint/shadow/pull/199", "tags": ["Patch", "Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "https://github.com/void-linux/void-packages/pull/17580", "tags": ["Patch", "Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "https://security.gentoo.org/glsa/202008-09", "source": "cve@mitre.org"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-732"}]}], "descriptions": [{"lang": "en", "value": "shadow 4.8, in certain circumstances affecting at least Gentoo, Arch Linux, and Void Linux, allows local users to obtain root access because setuid programs are misconfigured. Specifically, this affects shadow 4.8 when compiled using --with-libpam but without explicitly passing --disable-account-tools-setuid, and without a PAM configuration suitable for use with setuid account management tools. This combination leads to account management tools (groupadd, groupdel, groupmod, useradd, userdel, usermod) that can easily be used by unprivileged local users to escalate privileges to root in multiple ways. This issue became much more relevant in approximately December 2019 when an unrelated bug was fixed (i.e., the chmod calls to suidusbins were fixed in the upstream Makefile which is now included in the release version 4.8)."}, {"lang": "es", "value": "shadow versi\u00f3n 4.8, en determinadas circunstancias que afectan al menos a Gentoo, Arch Linux y Void Linux, permite a usuarios locales conseguir acceso root porque los programas setuid est\u00e1n configurados inapropiadamente. Espec\u00edficamente, esto afecta a shadow versi\u00f3n 4.8 cuando se compila usando --with-libpam pero sin pasar expl\u00edcitamente --disable-account-tools-setuid, y sin una configuraci\u00f3n PAM adecuada para utilizar con herramientas de administraci\u00f3n de cuentas setuid. Esta combinaci\u00f3n conlleva a herramientas de administraci\u00f3n de cuentas (groupadd, groupdel, groupmod, useradd, userdel, usermod) que pueden ser usadas f\u00e1cilmente por usuarios locales sin privilegios para escalar privilegios a root de m\u00faltiples maneras. Este problema se volvi\u00f3 mucho m\u00e1s relevante aproximadamente en Diciembre de 2019 cuando fue corregido un error no relacionado (es decir, las llamadas de chmod a suidusbins fueron corregidas antes del Makefile que ahora se incluye en la versi\u00f3n 4.8 publicada)."}], "lastModified": "2020-08-25T15:15:11.903", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:shadow_project:shadow:4.8:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "46EFB694-2450-4B53-B775-35C4A1D2BCAF"}], "operator": "OR"}]}], "sourceIdentifier": "cve@mitre.org"}