CVE-2026-19082

{
  "id": "CVE-2026-19082",
  "sourceIdentifier": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
  "published": "2026-08-07T18:17:11.363",
  "lastModified": "2026-10-23T20:10:00.160",
  "vulnStatus": "Deferred",
  "cveTags": [],
  "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 través de una lectura excesiva de “strlen()” de entradas EXIF ASCII con conteo cero en “copy_string_tags”.\n\n“copy_string_tags()” calcula la longitud de una etiqueta EXIF ASCII como “entry  ->  size - 1” para eliminar el NUL final. Una entrada ASCII con conteo cero establece “entry  ->  size” en 0, y la longitud derivada llega a “i_tags_add()” como -1, lo que se interpreta como una solicitud para llamar a “strlen()”, escaneando más allá de la entrada hasta el siguiente NUL y copiando esos bytes en la etiqueta. JPEG alcanza esta ruta a través de “im_decode_exif()”, al igual que la distribución separada “Imager::File::WEBP”, lo cual se soluciona actualizando Imager.\n\nCualquier llamador de “Imager  ->  read()” en una imagen proporcionada por el atacante con dicha entrada puede recibir una etiqueta “exif_*” que contiene bytes adyacentes del heap en lugar de una cadena vacía."
    }
  ],
  "affected": [
    {
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
      "affectedData": [
        {
          "vendor": "TONYC",
          "product": "Imager",
          "defaultStatus": "unaffected",
          "collectionURL": "https://cpan.org/modules",
          "packageName": "Imager",
          "programFiles": [
            "imexif.c",
            "tags.c"
          ],
          "programRoutines": [
            {
              "name": "copy_string_tags"
            },
            {
              "name": "i_tags_add"
            }
          ],
          "repo": "https://github.com/tonycoz/imager",
          "versions": [
            {
              "version": "0.45_02",
              "lessThan": "1.034",
              "versionType": "custom",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "availabilityImpact": "NONE"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-08-07T18:21:43.252440Z",
          "id": "CVE-2026-19082",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-125"
        }
      ]
    }
  ],
  "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"
    }
  ]
}