{
  "id": "CVE-2023-46250",
  "sourceIdentifier": "security-advisories@github.com",
  "published": "2023-10-31T16:15:09.930",
  "lastModified": "2024-11-21T08:28:10.137",
  "vulnStatus": "Modified",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "pypdf is a free and open-source pure-python PDF library. An attacker who uses a vulnerability present in versions 3.7.0 through 3.16.4 can craft a PDF which leads to an infinite loop. This infinite loop blocks the current process and can utilize a single core of the CPU by 100%. It does not affect memory usage. That is, for example, the case when the pypdf-user manipulates an incoming malicious PDF e.g. by merging it with another PDF or by adding annotations. The issue was fixed in version 3.17.0. As a workaround, apply the patch manually by modifying `pypdf/generic/_data_structures.py`."
    },
    {
      "lang": "es",
      "value": "pypdf es una librer\u00eda de PDF pura de Python gratuita y de c\u00f3digo abierto. Un atacante que utilice una vulnerabilidad presente en las versiones 3.7.0 a 3.16.4 puede crear un PDF que genere un bucle infinito. Este bucle infinito bloquea el proceso actual y puede utilizar un solo n\u00facleo de la CPU al 100%. No afecta el uso de la memoria. Ese es, por ejemplo, el caso cuando el usuario de pypdf manipula un PDF malicioso entrante, por ejemplo fusion\u00e1ndolo con otro PDF o agregando anotaciones. El problema se solucion\u00f3 en la versi\u00f3n 3.17.0. Como workaround, aplique el parche manualmente modificando `pypdf/generic/_data_structures.py`."
    }
  ],
  "metrics": {
    "cvssMetricV31": [
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        "source": "security-advisories@github.com",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "baseScore": 5.1,
          "baseSeverity": "MEDIUM",
          "attackVector": "LOCAL",
          "attackComplexity": "HIGH",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 1.4,
        "impactScore": 3.6
      },
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        "type": "Primary",
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          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "attackVector": "LOCAL",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "REQUIRED",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "availabilityImpact": "HIGH"
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        "exploitabilityScore": 1.8,
        "impactScore": 3.6
      }
    ]
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  "weaknesses": [
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      "source": "security-advisories@github.com",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-835"
        }
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  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:pypdf_project:pypdf:*:*:*:*:*:*:*:*",
              "versionStartIncluding": "3.7.0",
              "versionEndExcluding": "3.17.0",
              "matchCriteriaId": "FC5F9A57-7CED-4B60-89E9-B33B91496624"
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  "references": [
    {
      "url": "https://github.com/py-pdf/pypdf/commit/9b23ac3c9619492570011d551d521690de9a3e2d",
      "source": "security-advisories@github.com",
      "tags": [
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    {
      "url": "https://github.com/py-pdf/pypdf/pull/2264",
      "source": "security-advisories@github.com",
      "tags": [
        "Issue Tracking",
        "Patch"
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    },
    {
      "url": "https://github.com/py-pdf/pypdf/security/advisories/GHSA-wjcc-cq79-p63f",
      "source": "security-advisories@github.com",
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      "url": "https://github.com/py-pdf/pypdf/commit/9b23ac3c9619492570011d551d521690de9a3e2d",
      "source": "af854a3a-2127-422b-91ae-364da2661108",
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}