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{"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"}