{
  "id": "CVE-2022-1923",
  "sourceIdentifier": "secalert@redhat.com",
  "published": "2022-07-19T20:15:10.967",
  "lastModified": "2024-11-21T06:41:45.607",
  "vulnStatus": "Modified",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "DOS / potential heap overwrite in mkv demuxing using bzip decompression. Integer overflow in matroskademux element in bzip decompression function which causes a segfault, or could cause a heap overwrite, depending on libc and OS. Depending on the libc used, and the underlying OS capabilities, it could be just a segfault or a heap overwrite. If the libc uses mmap for large chunks, and the OS supports mmap, then it is just a segfault (because the realloc before the integer overflow will use mremap to reduce the size of the chunk, and it will start to write to unmapped memory). However, if using a libc implementation that does not use mmap, or if the OS does not support mmap while using libc, then this could result in a heap overwrite."
    },
    {
      "lang": "es",
      "value": "DOS / sobreescritura potencial de heap en la demuxaci\u00f3n de mkv usando la descompresi\u00f3n bzip. Desbordamiento de enteros en el elemento matroskademux en la funci\u00f3n de descompresi\u00f3n bzip que causa un segfault, o podr\u00eda causar una escritura excesiva de la pila, dependiendo de la libc y el SO. Dependiendo de la libc usada, y de las capacidades del SO subyacente, podr\u00eda ser s\u00f3lo un segfault o una escritura excesiva de la pila. Si la libc usa mmap para los trozos grandes, y el SO soporta mmap, entonces es s\u00f3lo un segfault (porque la reasignaci\u00f3n antes del desbordamiento de enteros usar\u00e1 mremap para reducir el tama\u00f1o del trozo, y comenzar\u00e1 a escribir en la memoria no mapeada). Sin embargo, si es usada una implementaci\u00f3n de libc que no usa mmap, o si el SO no soporta mmap mientras es usada libc, entonces esto podr\u00eda resultar en una escritura excesiva de la pila."
    }
  ],
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        "type": "Primary",
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          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "attackVector": "LOCAL",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "REQUIRED",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.9
      }
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  "weaknesses": [
    {
      "source": "secalert@redhat.com",
      "type": "Secondary",
      "description": [
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          "lang": "en",
          "value": "CWE-122"
        }
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      "type": "Primary",
      "description": [
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          "lang": "en",
          "value": "CWE-190"
        }
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  "references": [
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      "url": "https://gitlab.freedesktop.org/gstreamer/gstreamer/-/issues/1225",
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