FKIE_CVE-2019-14878

Vulnerability from fkie_nvd - Published: 2020-03-19 16:15 - Updated: 2024-11-21 04:27
Severity ?
6.5 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
In the __d2b function of the newlib libc library, all versions prior to 3.3.0 (see newlib/libc/stdlib/mprec.c), Balloc is used to allocate a big integer, however no check is performed to verify if the allocation succeeded or not. Accessing _x will trigger a null pointer dereference bug in case of a memory allocation failure.
References
secalert@redhat.comhttps://census-labs.com/news/2020/01/31/multiple-null-pointer-dereference-vulnerabilities-in-newlib/Exploit, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://census-labs.com/news/2020/01/31/multiple-null-pointer-dereference-vulnerabilities-in-newlib/Exploit, Third Party Advisory
Impacted products
Vendor Product Version
newlib_project newlib *
To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:newlib_project:newlib:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "9B8D2CEE-05F7-494E-B8C8-A0A43EE9E934",
              "versionEndExcluding": "3.3.0",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the __d2b function of the newlib libc library, all versions prior to 3.3.0 (see newlib/libc/stdlib/mprec.c), Balloc is used to allocate a big integer, however no check is performed to verify if the allocation succeeded or not. Accessing _x will trigger a null pointer dereference bug in case of a memory allocation failure."
    },
    {
      "lang": "es",
      "value": "En la funci\u00f3n __d2b de la biblioteca newlib libc, todas las versiones anteriores a 3.3.0 (ver el archivo newlib/libc/stdlib/mprec.c), Balloc es utilizado para asignar un entero grande, sin embargo, ninguna comprobaci\u00f3n es realizada para verificar si la asignaci\u00f3n tuvo \u00e9xito o no. El acceso a _x activar\u00e1 un bug de desreferencia del puntero null en caso de un fallo de asignaci\u00f3n de la memoria."
    }
  ],
  "id": "CVE-2019-14878",
  "lastModified": "2024-11-21T04:27:35.103",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "NETWORK",
          "authentication": "SINGLE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 4.0,
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "vectorString": "AV:N/AC:L/Au:S/C:N/I:N/A:P",
          "version": "2.0"
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        "exploitabilityScore": 8.0,
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          "baseSeverity": "MEDIUM",
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          "baseScore": 6.5,
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          "confidentialityImpact": "NONE",
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          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
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  "published": "2020-03-19T16:15:14.220",
  "references": [
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      "tags": [
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      "url": "https://census-labs.com/news/2020/01/31/multiple-null-pointer-dereference-vulnerabilities-in-newlib/"
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  "sourceIdentifier": "secalert@redhat.com",
  "vulnStatus": "Modified",
  "weaknesses": [
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      "description": [
        {
          "lang": "en",
          "value": "CWE-476"
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}


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