CVE-2026-37531

{
  "id": "CVE-2026-37531",
  "sourceIdentifier": "[email protected]",
  "published": "2026-05-01T17:16:22.720",
  "lastModified": "2026-11-08T16:10:00.183",
  "vulnStatus": "Analyzed",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "AGL app-framework-main thru 17.1.12 contains a Zip Slip path traversal vulnerability (CWE-22) combined with a TOCTOU race condition (CWE-367) in the widget installation flow. The is_valid_filename function in wgtpkg-zip.c validates ZIP entry names but does not check for dot notation directory traversal sequences it only blocks absolute paths. The zread extraction function uses openat(workdirfd, filename, O_CREAT) which resolves dot notation values relative to the work directory, allowing files to be written anywhere on the filesystem. Critically, in function install_widget in file wgtpkg-install.c, extraction via zread occurs BEFORE signature verification via check_all_signatures. Even if signature verification fails, the error cleanup (remove_workdir) only deletes the temporary work directory files written outside via path traversal persist permanently."
    },
    {
      "lang": "es",
      "value": "AGL app-framework-main hasta 17.1.12 contiene una vulnerabilidad de salto de ruta Zip Slip (CWE-22) combinada con una condición de carrera TOCTOU (CWE-367) en el flujo de instalación de widgets. La función is_valid_filename en wgtpkg-zip.c valida los nombres de entrada ZIP pero no verifica secuencias de salto de directorio con notación de puntos; solo bloquea rutas absolutas. La función de extracción zread utiliza openat(workdirfd, filename, O_CREAT) que resuelve valores de notación de puntos relativos al directorio de trabajo, permitiendo que los archivos se escriban en cualquier lugar del sistema de archivos. Críticamente, en la función install_widget en el archivo wgtpkg-install.c, la extracción a través de zread ocurre ANTES de la verificación de firma a través de check_all_signatures. Incluso si la verificación de firma falla, la limpieza de errores (remove_workdir) solo elimina el directorio de trabajo temporal; los archivos escritos fuera mediante salto de ruta persisten permanentemente."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "version": "n/a",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "baseScore": 9.8,
          "baseSeverity": "CRITICAL",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 5.9
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-05-01T19:34:07.709953Z",
          "id": "CVE-2026-37531",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-22"
        },
        {
          "lang": "en",
          "value": "CWE-367"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:o:linuxfoundation:automotive_grade_linux:*:*:*:*:*:*:*:*",
              "versionEndIncluding": "17.1.12",
              "matchCriteriaId": "F565A1E5-42E5-4115-830F-2A328C92F35B"
            }
          ]
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://gerrit.automotivelinux.org/gerrit/src/app-framework-main",
      "source": "[email protected]",
      "tags": [
        "Broken Link"
      ]
    },
    {
      "url": "https://gist.github.com/sgInnora/8526eedcfd826d05ef1fc45d8f405643",
      "source": "[email protected]",
      "tags": [
        "Third Party Advisory"
      ]
    }
  ]
}