{ "id": "CVE-2020-28025", "sourceIdentifier": "cve@mitre.org", "published": "2021-05-06T13:15:09.750", "lastModified": "2021-05-10T16:11:00.653", "vulnStatus": "Analyzed", "descriptions": [ { "lang": "en", "value": "Exim 4 before 4.94.2 allows Out-of-bounds Read because pdkim_finish_bodyhash does not validate the relationship between sig->bodyhash.len and b->bh.len; thus, a crafted DKIM-Signature header might lead to a leak of sensitive information from process memory." }, { "lang": "es", "value": "Exim 4 versiones anteriores a 4.94.2, permite una lectura fuera de l\u00edmites porque pdkim_finish_bodyhash no comprueba la relaci\u00f3n entre sig-)bodyhash.len y b-)bh.len; por lo tanto, un encabezado DKIM-Signature dise\u00f1ado podr\u00eda conllevar una filtraci\u00f3n de informaci\u00f3n confidencial de la memoria del proceso" } ], "metrics": { "cvssMetricV31": [ { "source": "nvd@nist.gov", "type": "Primary", "cvssData": { "version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "availabilityImpact": "NONE", "baseScore": 7.5, "baseSeverity": "HIGH" }, "exploitabilityScore": 3.9, "impactScore": 3.6 } ], "cvssMetricV2": [ { "source": "nvd@nist.gov", "type": "Primary", "cvssData": { "version": "2.0", "vectorString": "AV:N/AC:L/Au:N/C:P/I:N/A:N", "accessVector": "NETWORK", "accessComplexity": "LOW", "authentication": "NONE", "confidentialityImpact": "PARTIAL", "integrityImpact": "NONE", "availabilityImpact": "NONE", "baseScore": 5.0 }, "baseSeverity": "MEDIUM", "exploitabilityScore": 10.0, "impactScore": 2.9, "acInsufInfo": false, "obtainAllPrivilege": false, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false } ] }, "weaknesses": [ { "source": "nvd@nist.gov", "type": "Primary", "description": [ { "lang": "en", "value": "CWE-125" } ] } ], "configurations": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:a:exim:exim:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.00", "versionEndExcluding": "4.94.2", "matchCriteriaId": "E0B1EAB0-1202-4BB9-94AF-CC07299D0256" } ] } ] } ], "references": [ { "url": "https://www.exim.org/static/doc/security/CVE-2020-qualys/CVE-2020-28025-BHASH.txt", "source": "cve@mitre.org", "tags": [ "Third Party Advisory" ] } ] }