CVE-2018-1121

{"id": "CVE-2018-1121", "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 4.3, "accessVector": "NETWORK", "vectorString": "AV:N/AC:M/Au:N/C:N/I:P/A:N", "authentication": "NONE", "integrityImpact": "PARTIAL", "accessComplexity": "MEDIUM", "availabilityImpact": "NONE", "confidentialityImpact": "NONE"}, "acInsufInfo": false, "impactScore": 2.9, "baseSeverity": "MEDIUM", "obtainAllPrivilege": false, "exploitabilityScore": 8.6, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}], "cvssMetricV30": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.0", "baseScore": 5.9, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 2.2}, {"type": "Secondary", "source": "secalert@redhat.com", "cvssData": {"scope": "UNCHANGED", "version": "3.0", "baseScore": 3.9, "attackVector": "LOCAL", "baseSeverity": "LOW", "vectorString": "CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:L", "integrityImpact": "LOW", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "LOW", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 2.5, "exploitabilityScore": 1.3}]}, "published": "2018-06-13T20:29:00.337", "references": [{"url": "http://seclists.org/oss-sec/2018/q2/122", "tags": ["Exploit", "Mailing List", "Third Party Advisory"], "source": "secalert@redhat.com"}, {"url": "http://www.securityfocus.com/bid/104214", "tags": ["Third Party Advisory", "VDB Entry"], "source": "secalert@redhat.com"}, {"url": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-1121", "tags": ["Issue Tracking", "Third Party Advisory"], "source": "secalert@redhat.com"}, {"url": "https://www.exploit-db.com/exploits/44806/", "tags": ["Exploit", "Third Party Advisory", "VDB Entry"], "source": "secalert@redhat.com"}, {"url": "https://www.qualys.com/2018/05/17/procps-ng-audit-report-advisory.txt", "tags": ["Exploit", "Third Party Advisory"], "source": "secalert@redhat.com"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-362"}]}, {"type": "Secondary", "source": "secalert@redhat.com", "description": [{"lang": "en", "value": "CWE-367"}]}], "descriptions": [{"lang": "en", "value": "procps-ng, procps is vulnerable to a process hiding through race condition. Since the kernel's proc_pid_readdir() returns PID entries in ascending numeric order, a process occupying a high PID can use inotify events to determine when the process list is being scanned, and fork/exec to obtain a lower PID, thus avoiding enumeration. An unprivileged attacker can hide a process from procps-ng's utilities by exploiting a race condition in reading /proc/PID entries. This vulnerability affects procps and procps-ng up to version 3.3.15, newer versions might be affected also."}, {"lang": "es", "value": "procps-ng, procps son vulnerables a una ocultaci\u00f3n de procesos mediante una condici\u00f3n de carrera. Debido a que el proc_pid_readdir() del kernel devuelve las entradas PID en orden num\u00e9rico ascendente, un proceso que ocupe un PID alto puede emplear eventos inotify para determinar cu\u00e1ndo se est\u00e1 escaneando la lista de procesos y hacer un fork/exec para obtener un PID menor, evitando as\u00ed la enumeraci\u00f3n. Un atacante sin privilegios puede ocultar un proceso de las utilidades procps-ng mediante la explotaci\u00f3n de una condici\u00f3n de carrera en la lectura de entradas /proc/PID. Esta vulnerabilidad afecta a procps y procps-ng hasta la versi\u00f3n 3.3.15; versiones posteriores tambi\u00e9n podr\u00edan haberse visto afectadas."}], "lastModified": "2020-06-30T16:15:14.393", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:procps_project:procps:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C3460032-733F-4974-BD6B-786F8295C373", "versionEndIncluding": "3.3.15"}], "operator": "OR"}]}], "sourceIdentifier": "secalert@redhat.com"}