CVE-2012-4502

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NOTE: versions 1.27 and 1.28 do not require authentication to exploit."}, {"lang": "es", "value": "M\u00faltiples desbordamientos de enteros en pktlength.c en Chrony anterior a 1.29 permite a atacantes remotos provocar una denegaci\u00f3n de servicio (ca\u00edda) a trav\u00e9s de un (1) REQ_SUBNETS_ACCESSED manipulado o (2) comando REQ_CLIENT_ACCESSES a la funci\u00f3n PKL_CommandLength o la manipulaci\u00f3n de (3) RPY_SUBNETS_ACCESSED, (4) RPY_CLIENT_ACCESSES), (5) RPY_CLIENT_ACCESSES_BY_INDEX, o (6) Respuesta del comando RPY_MANUAL_LIST por la funci\u00f3n PKL_ReplyLength, lo que provoca un desbordamiento de buffer o lectura fuera de l\u00edmite. NOTA: Las versiones 1.27 y 1.28 no requieren autenticaci\u00f3n para su explotaci\u00f3n."}], "id": "CVE-2012-4502", "lastModified": "2026-06-16T23:45:13.097", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 5.0, "confidentialityImpact": "NONE", "integrityImpact": "NONE", "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "version": "2.0"}, "exploitabilityScore": 10.0, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}]}, "published": "2013-11-05T21:55:08.047", "references": [{"source": "secalert@redhat.com", "url": "http://git.tuxfamily.org/chrony/chrony.git/?p=chrony/chrony.git%3Ba=commitdiff%3Bh=7712455d9aa33d0db0945effaa07e900b85987b1"}, {"source": "secalert@redhat.com", "tags": ["Patch", "Vendor Advisory"], "url": "http://permalink.gmane.org/gmane.comp.time.chrony.announce/15"}, {"source": "secalert@redhat.com", "tags": ["Patch"], "url": "http://seclists.org/oss-sec/2013/q3/332"}, {"source": "secalert@redhat.com", "url": "http://www.debian.org/security/2013/dsa-2760"}, {"source": "secalert@redhat.com", "tags": ["Patch"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=846392"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://git.tuxfamily.org/chrony/chrony.git/?p=chrony/chrony.git%3Ba=commitdiff%3Bh=7712455d9aa33d0db0945effaa07e900b85987b1"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "Vendor Advisory"], "url": "http://permalink.gmane.org/gmane.comp.time.chrony.announce/15"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "http://seclists.org/oss-sec/2013/q3/332"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://www.debian.org/security/2013/dsa-2760"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=846392"}], "sourceIdentifier": "secalert@redhat.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-189"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"acknowledgement": "This issue was discovered by Florian Weimer (Red Hat) and Miroslav Lichvar (Red Hat).", "bugzilla": {"description": "chrony: Two security flaws fixed in chrony-1.29 release", "id": "846392", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=846392"}, "csaw": false, "cvss": {"cvss_base_score": "5.0", "cvss_scoring_vector": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "status": "draft"}, "details": ["Multiple integer overflows in pktlength.c in Chrony before 1.29 allow remote attackers to cause a denial of service (crash) via a crafted (1) REQ_SUBNETS_ACCESSED or (2) REQ_CLIENT_ACCESSES command request to the PKL_CommandLength function or crafted (3) RPY_SUBNETS_ACCESSED, (4) RPY_CLIENT_ACCESSES, (5) RPY_CLIENT_ACCESSES_BY_INDEX, or (6) RPY_MANUAL_LIST command reply to the PKL_ReplyLength function, which triggers an out-of-bounds read or buffer overflow. NOTE: versions 1.27 and 1.28 do not require authentication to exploit."], "name": "CVE-2012-4502", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "chrony", "product_name": "Red Hat Enterprise Linux 7"}], "public_date": "2013-08-09T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2012-4502\nhttps://nvd.nist.gov/vuln/detail/CVE-2012-4502"], "threat_severity": "Moderate"}

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