CVE-2026-43907

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{"affected": [{"affectedData": [{"product": "OpenImageIO", "vendor": "AcademySoftwareFoundation", "versions": [{"status": "affected", "version": "< 3.0.18.0"}, {"status": "affected", "version": ">= 3.1.4.0-beta, < 3.1.13.0"}]}], "source": "security-advisories@github.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:openimageio:openimageio:*:*:*:*:*:*:*:*", "matchCriteriaId": "90B206C1-E7DB-4175-8077-C76D5C8533AF", "versionEndExcluding": "3.0.18.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:openimageio:openimageio:*:*:*:*:*:*:*:*", "matchCriteriaId": "34BBB27F-256F-4D15-A394-158343CB8B4D", "versionEndExcluding": "3.1.13.0", "versionStartIncluding": "3.1.4.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:openimageio:openimageio:3.2.0.2:dev:*:*:*:*:*:*", "matchCriteriaId": "450296D8-74F5-4847-8433-FE3DFB16C58E", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "OpenImageIO is a toolset for reading, writing, and manipulating image files of any image file format relevant to VFX / animation. Prior to 3.0.18.0 and 3.1.13.0, a signed integer overflow in QueryRGBBufferSizeInternal() in DPXColorConverter.cpp leads to a heap-based out-of-bounds write when processing crafted DPX image files. The function computes buffer sizes using 32-bit signed integer arithmetic with negative multipliers (e.g., pixels * -3 * bytes for kCbYCr descriptors and pixels * -4 * bytes for kABGR descriptors), where a negative result is used as an in-band signal that no separate buffer is needed. When the pixel count is sufficiently large, the multiplication overflows INT_MIN and wraps to a small positive value. The caller in dpxinput.cpp interprets this positive value as a required buffer size, allocates an undersized heap buffer via m_decodebuf.resize(), and then writes the full image data into it via fread, resulting in a heap buffer overflow. An attacker can exploit this by crafting a DPX file that triggers the overflow, causing a denial of service (crash) or potentially arbitrary code execution through heap corruption in any application that reads pixel data using OpenImageIO. This vulnerability is fixed in 3.0.18.0 and 3.1.13.0."}, {"lang": "es", "value": "OpenImageIO es un conjunto de herramientas para leer, escribir y manipular archivos de imagen de cualquier formato de archivo de imagen relevante para VFX / animaci\u00f3n. Antes de 3.0.18.0 y 3.1.13.0, un desbordamiento de entero con signo en QueryRGBBufferSizeInternal() en DPXColorConverter.cpp conduce a una escritura fuera de l\u00edmites basada en el heap al procesar archivos de imagen DPX manipulados. La funci\u00f3n calcula los tama\u00f1os de b\u00fafer utilizando aritm\u00e9tica de enteros con signo de 32 bits con multiplicadores negativos (por ejemplo, p\u00edxeles * -3 * bytes para descriptores kCbYCr y p\u00edxeles * -4 * bytes para descriptores kABGR), donde un resultado negativo se utiliza como una se\u00f1al en banda de que no se necesita un b\u00fafer separado. Cuando el recuento de p\u00edxeles es suficientemente grande, la multiplicaci\u00f3n desborda INT_MIN y se ajusta a un peque\u00f1o valor positivo. El llamador en dpxinput.cpp interpreta este valor positivo como un tama\u00f1o de b\u00fafer requerido, asigna un b\u00fafer de heap de tama\u00f1o insuficiente a trav\u00e9s de m_decodebuf.resize(), y luego escribe los datos completos de la imagen en \u00e9l a trav\u00e9s de fread, lo que resulta en un desbordamiento de b\u00fafer de heap. Un atacante puede explotar esto creando un archivo DPX que desencadena el desbordamiento, causando una denegaci\u00f3n de servicio (bloqueo) o potencialmente ejecuci\u00f3n de c\u00f3digo arbitrario a trav\u00e9s de la corrupci\u00f3n del heap en cualquier aplicaci\u00f3n que lea datos de p\u00edxeles usando OpenImageIO. Esta vulnerabilidad se corrige en 3.0.18.0 y 3.1.13.0."}], "id": "CVE-2026-43907", "lastModified": "2026-10-25T23:10:00.167", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.3, "baseSeverity": "HIGH", "confidentialityImpact": "LOW", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 5.5, "source": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-43907", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-05-14T19:49:04.586037Z", "version": "2.0.3"}}]}, "published": "2026-05-14T20:17:06.760", "references": [{"source": "security-advisories@github.com", "tags": ["Exploit", "Vendor Advisory"], "url": "https://github.com/AcademySoftwareFoundation/OpenImageIO/security/advisories/GHSA-cq46-hp4h-cvfr"}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "tags": ["Exploit", "Vendor Advisory"], "url": "https://github.com/AcademySoftwareFoundation/OpenImageIO/security/advisories/GHSA-cq46-hp4h-cvfr"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-190"}, {"lang": "en", "value": "CWE-787"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{}

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