CVE-2019-19624

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{"affected": [{"affectedData": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "source": "cve@mitre.org"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:opencv:opencv:*:*:*:*:*:*:*:*", "matchCriteriaId": "B00DAA9A-1738-491E-9220-BFFB8580CAB4", "versionEndExcluding": "4.1.1", "vulnerable": true}], "negate": false, "operator": "OR"}]}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*", "matchCriteriaId": "F4CFF558-3C47-480D-A2F0-BABF26042943", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "An out-of-bounds read was discovered in OpenCV before 4.1.1. Specifically, variable coarsest_scale is assumed to be greater than or equal to finest_scale within the calc()/ocl_calc() functions in dis_flow.cpp. However, this is not true when dealing with small images, leading to an out-of-bounds read of the heap-allocated arrays Ux and Uy."}, {"lang": "es", "value": "Se detect\u00f3 una lectura fuera de l\u00edmites en OpenCV versiones anteriores a 4.1.1. Espec\u00edficamente, una variable coarsest_scale es asumida para ser mayor o igual que finest_scale dentro de las funciones calc() y ocl_calc() en el archivo dis_flow.cpp. Sin embargo, esto no es cierto cuando se trata de im\u00e1genes peque\u00f1as, conllevando a una lectura fuera de l\u00edmites de las matrices Ux y Uy asignadas de la pila."}], "id": "CVE-2019-19624", "lastModified": "2026-06-17T02:26:58.000", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 6.4, "confidentialityImpact": "PARTIAL", "integrityImpact": "NONE", "vectorString": "AV:N/AC:L/Au:N/C:P/I:N/A:P", "version": "2.0"}, "exploitabilityScore": 10.0, "impactScore": 4.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 2.5, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2019-12-06T15:15:10.330", "references": [{"source": "cve@mitre.org", "tags": ["Patch", "Third Party Advisory"], "url": "https://github.com/opencv/opencv/commit/d1615ba11a93062b1429fce9f0f638d1572d3418"}, {"source": "cve@mitre.org", "tags": ["Exploit", "Issue Tracking", "Third Party Advisory"], "url": "https://github.com/opencv/opencv/issues/14554"}, {"source": "nvd@nist.gov", "tags": ["Third Party Advisory"], "url": "https://access.redhat.com/security/cve/cve-2019-19624"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "Third Party Advisory"], "url": "https://github.com/opencv/opencv/commit/d1615ba11a93062b1429fce9f0f638d1572d3418"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Issue Tracking", "Third Party Advisory"], "url": "https://github.com/opencv/opencv/issues/14554"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-125"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "opencv: out-of-bounds read in DIS optflow algorithm when dealing with small images", "id": "1780543", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1780543"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.3", "cvss3_scoring_vector": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L", "status": "draft"}, "cwe": "CWE-129->(CWE-125|CWE-617)", "details": ["An out-of-bounds read was discovered in OpenCV before 4.1.1. Specifically, variable coarsest_scale is assumed to be greater than or equal to finest_scale within the calc()/ocl_calc() functions in dis_flow.cpp. However, this is not true when dealing with small images, leading to an out-of-bounds read of the heap-allocated arrays Ux and Uy.", "An out-of-bounds read vulnerability was discovered in OpenCV. This flaw can be exploited when a small, carefully crafted image is loaded by an application linked to OpenCV. A remote attacker could exploit this flaw, causing a denial of service by causing the application to crash or read sensitive information from memory."], "name": "CVE-2019-19624", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "opencv", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "opencv", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "opencv", "product_name": "Red Hat Enterprise Linux 8"}], "public_date": "2019-05-14T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2019-19624\nhttps://nvd.nist.gov/vuln/detail/CVE-2019-19624"], "statement": "This issue did not affect the versions of OpenCV as shipped with Red Hat Enterprise Linux 6, and 7 as they did not include support for DIS optflow algorithm.\nThis issue affects OpenCV as shipped with Red Hat Enterprise Linux 8. However, the package has been built with C++ standard library hardening (_GLIBCXX_ASSERTIONS) that enables range checks for C++ arrays, vectors, and strings. This leads to an application exit due to an assertion statement and prevents the out-of-bounds read to be exploitable.", "threat_severity": "Low"}

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