CVE-2026-19082

{"id": "CVE-2026-19082", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-19082", "role": "CISA Coordinator", "options": [{"exploitation": "poc"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-08-07T18:21:43.252440Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.5, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 3.6, "exploitabilityScore": 3.9}]}, "affected": [{"source": "9b29abf9-4ab0-4765-b253-1875cd9b441e", "affectedData": [{"repo": "https://github.com/tonycoz/imager", "vendor": "TONYC", "product": "Imager", "versions": [{"status": "affected", "version": "0.45_02", "lessThan": "1.034", "versionType": "custom"}], "packageName": "Imager", "programFiles": ["imexif.c", "tags.c"], "collectionURL": "https://cpan.org/modules", "defaultStatus": "unaffected", "programRoutines": [{"name": "copy_string_tags"}, {"name": "i_tags_add"}]}]}], "published": "2026-08-07T18:17:11.363", "references": [{"url": "https://github.com/tonycoz/imager/commit/24bde0427a113264d53f45a9c29ae756d84c82fe.patch", "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e"}, {"url": "https://github.com/tonycoz/imager/security/advisories/GHSA-hx46-55wp-hv6m", "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e"}, {"url": "https://metacpan.org/release/TONYC/Imager-1.034/changes", "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e"}, {"url": "http://www.openwall.com/lists/oss-security/2026/08/07/6", "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://github.com/tonycoz/imager/security/advisories/GHSA-hx46-55wp-hv6m", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}], "vulnStatus": "Deferred", "weaknesses": [{"type": "Secondary", "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e", "description": [{"lang": "en", "value": "CWE-125"}]}], "descriptions": [{"lang": "en", "value": "Imager versions from 0.45_02 before 1.034 for Perl may expose adjacent heap bytes via strlen() over-read from zero-count ASCII EXIF entries in copy_string_tags.\n\ncopy_string_tags() computes an ASCII EXIF tag's length as `entry->size - 1` to strip the trailing NUL. A zero-count ASCII entry sets `entry->size` to 0, and the derived length reaches i_tags_add() as -1, which is interpreted as a request to call strlen(), scanning past the entry to the next NUL and copying those bytes into the tag. JPEG reaches this path via im_decode_exif(), as does the separate Imager::File::WEBP distribution, which is fixed by upgrading Imager.\n\nAny caller of Imager->read() on an attacker-supplied image with such an entry may receive an exif_* tag holding adjacent heap bytes instead of an empty string."}, {"lang": "es", "value": "Las versiones de Imager desde la 0.45_02 anteriores a la 1.034 para Perl pueden exponer bytes adyacentes del heap a trav\u00e9s de una lectura excesiva de \u201cstrlen()\u201d de entradas EXIF ASCII con conteo cero en \u201ccopy_string_tags\u201d.\n\n\u201ccopy_string_tags()\u201d calcula la longitud de una etiqueta EXIF ASCII como \u201centry -> size - 1\u201d para eliminar el NUL final. Una entrada ASCII con conteo cero establece \u201centry -> size\u201d en 0, y la longitud derivada llega a \u201ci_tags_add()\u201d como -1, lo que se interpreta como una solicitud para llamar a \u201cstrlen()\u201d, escaneando m\u00e1s all\u00e1 de la entrada hasta el siguiente NUL y copiando esos bytes en la etiqueta. JPEG alcanza esta ruta a trav\u00e9s de \u201cim_decode_exif()\u201d, al igual que la distribuci\u00f3n separada \u201cImager::File::WEBP\u201d, lo cual se soluciona actualizando Imager.\n\nCualquier llamador de \u201cImager -> read()\u201d en una imagen proporcionada por el atacante con dicha entrada puede recibir una etiqueta \u201cexif_*\u201d que contiene bytes adyacentes del heap en lugar de una cadena vac\u00eda."}], "lastModified": "2026-10-23T20:10:00.160", "sourceIdentifier": "9b29abf9-4ab0-4765-b253-1875cd9b441e"}