CVE-2025-68431

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{"affected": [{"affectedData": [{"product": "libheif", "vendor": "strukturag", "versions": [{"status": "affected", "version": "< 1.21.0"}]}], "source": "security-advisories@github.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:struktur:libheif:*:*:*:*:*:*:*:*", "matchCriteriaId": "BBD4D6C6-A38E-4C2C-AB9D-F82441BE2D4F", "versionEndExcluding": "1.21.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "libheif is an HEIF and AVIF file format decoder and encoder. Prior to version 1.21.0, a crafted HEIF that exercises the overlay image item path triggers a heap buffer over-read in `HeifPixelImage::overlay()`. The function computes a negative row length (likely from an unclipped overlay rectangle or invalid offsets), which then underflows when converted to `size_t` and is passed to `memcpy`, causing a very large read past the end of the source plane and a crash. Version 1.21.0 contains a patch. As a workaround, avoid decoding images using `iovl` overlay boxes."}, {"lang": "es", "value": "libheif es un decodificador y codificador de formato de archivo HEIF y AVIF. Antes de la versi\u00f3n 1.21.0, un HEIF manipulado que ejerce la ruta del elemento de imagen de superposici\u00f3n desencadena una lectura excesiva del b\u00fafer de pila en 'HeifPixelImage::overlay()'. La funci\u00f3n calcula una longitud de fila negativa (probablemente de un rect\u00e1ngulo de superposici\u00f3n no recortado o de desplazamientos no v\u00e1lidos), lo que luego provoca un desbordamiento negativo cuando se convierte a 'size_t' y se pasa a 'memcpy', causando una lectura muy grande m\u00e1s all\u00e1 del final del plano de origen y un fallo. La versi\u00f3n 1.21.0 contiene un parche. Como soluci\u00f3n alternativa, evite decodificar im\u00e1genes usando cajas de superposici\u00f3n 'iovl'."}], "id": "CVE-2025-68431", "lastModified": "2026-10-07T12:10:00.170", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 3.6, "source": "security-advisories@github.com", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.1, "baseSeverity": "HIGH", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 4.2, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2025-68431", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2025-12-30T21:54:12.455580Z", "version": "2.0.3"}}]}, "published": "2025-12-29T19:15:56.933", "references": [{"source": "security-advisories@github.com", "tags": ["Patch"], "url": "https://github.com/strukturag/libheif/commit/b8c12a7b70f46c9516711a988483bed377b78d46"}, {"source": "security-advisories@github.com", "tags": ["Product", "Release Notes"], "url": "https://github.com/strukturag/libheif/releases/tag/v1.21.0"}, {"source": "security-advisories@github.com", "tags": ["Exploit", "Patch", "Vendor Advisory"], "url": "https://github.com/strukturag/libheif/security/advisories/GHSA-j87x-4gmq-cqfq"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-125"}, {"lang": "en", "value": "CWE-190"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{}

{"created": "2026-01-05T10:23:13.452633+00:00", "updated": "2026-01-05T10:23:13.452681+00:00", "vendors": ["struktur", "struktur$PRODUCT$libheif"]}