CVE-2013-4143

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"cpe:2.3:a:david_bagley:xlockmore:5.41:*:*:*:*:*:*:*", "matchCriteriaId": "F3EBDA64-B0BA-45F9-8483-4936121864AC", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "The (1) checkPasswd and (2) checkGroupXlockPasswds functions in xlockmore before 5.43 do not properly handle when a NULL value is returned upon an error by the crypt or dispcrypt function as implemented in glibc 2.17 and later, which allows attackers to bypass the screen lock via vectors related to invalid salts."}, {"lang": "es", "value": "Las funciones (1) checkPasswd y (2) checkGroupXlockPasswds en xlockmore anterior a 5.43 no se manejan debidamente cuando un valor nulo est\u00e1 devuelto en un error por la funci\u00f3n crypt o dispcrypt tal y como est\u00e1 implementado en glibc 2.17 y posteriores, lo que permite a atacantes evadir el bloqueo de pantalla a trav\u00e9s de vectores relacionados con salts inv\u00e1lidos."}], "evaluatorComment": "per http://cwe.mitre.org/data/definitions/476.html\n\n\"CWE-476: NULL Pointer Dereference\"", "id": "CVE-2013-4143", "lastModified": "2026-06-16T23:56:42.107", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "LOW", "cvssData": {"accessComplexity": "LOW", "accessVector": "LOCAL", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 2.1, "confidentialityImpact": "NONE", "integrityImpact": "NONE", "vectorString": "AV:L/AC:L/Au:N/C:N/I:N/A:P", "version": "2.0"}, "exploitabilityScore": 3.9, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}]}, "published": "2014-05-30T14:55:08.257", "references": [{"source": "secalert@redhat.com", "url": "http://openwall.com/lists/oss-security/2013/07/16/8"}, {"source": "secalert@redhat.com", "url": "http://openwall.com/lists/oss-security/2013/07/18/6"}, {"source": "secalert@redhat.com", "tags": ["Vendor Advisory"], "url": "http://www.tux.org/~bagleyd/xlock/xlockmore.README"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://openwall.com/lists/oss-security/2013/07/16/8"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://openwall.com/lists/oss-security/2013/07/18/6"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "http://www.tux.org/~bagleyd/xlock/xlockmore.README"}], "sourceIdentifier": "secalert@redhat.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "NVD-CWE-Other"}], "source": "nvd@nist.gov", "type": "Primary"}]}

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