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CVE-2022-24724

Estado: ModificadaCrítica (9.8)—

cmark-gfm is GitHub's extended version of the C reference implementation of CommonMark. Prior to versions 0.29.0.gfm.3 and 0.28.3.gfm.21, an integer overflow in cmark-gfm's table row parsing `table.c:row_from_string` may lead to heap memory corruption when parsing tables who's marker rows contain more than UINT16_MAX columns. The impact of this heap corruption ranges from Information Leak to Arbitrary Code Execution depending on how and where `cmark-gfm` is used.

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If `cmark-gfm` is used for rendering remote user controlled markdown, this vulnerability may lead to Remote Code Execution (RCE) in applications employing affected versions of the `cmark-gfm` library. This vulnerability has been patched in the following cmark-gfm versions 0.29.0.gfm.3 and 0.28.3.gfm.21. A workaround is available. The vulnerability exists in the table markdown extensions of cmark-gfm. Disabling the table extension will prevent this vulnerability from being triggered.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (2)

Fedoraproject — FedoraGithub — Cmark-gfm

CWE

Referencias

JSON original (NVD)

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          "timestamp": "2025-04-22T15:44:15.748265Z"
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  "published": "2022-03-03T20:15:07.997",
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      "description": [
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          "value": "CWE-190"
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  "descriptions": [
    {
      "lang": "en",
      "value": "cmark-gfm is GitHub's extended version of the C reference implementation of CommonMark. Prior to versions 0.29.0.gfm.3 and 0.28.3.gfm.21, an integer overflow in cmark-gfm's table row parsing `table.c:row_from_string` may lead to heap memory corruption when parsing tables who's marker rows contain more than UINT16_MAX columns. The impact of this heap corruption ranges from Information Leak to Arbitrary Code Execution depending on how and where `cmark-gfm` is used. If `cmark-gfm` is used for rendering remote user controlled markdown, this vulnerability may lead to Remote Code Execution (RCE) in applications employing affected versions of the `cmark-gfm` library. This vulnerability has been patched in the following cmark-gfm versions 0.29.0.gfm.3 and 0.28.3.gfm.21. A workaround is available. The vulnerability exists in the table markdown extensions of cmark-gfm. Disabling the table extension will prevent this vulnerability from being triggered."
    },
    {
      "lang": "es",
      "value": "cmark-gfm es la versión extendida de GitHub de la implementación de referencia en C de CommonMark. En versiones anteriores a 0.29.0.gfm.3 y 0.28.3.gfm.21, un desbordamiento de enteros en el análisis de filas de tablas de cmark-gfm, \"table.c:row_from_string\", podía conllevar a una corrupción de la memoria de la pila cuando eran analizadas tablas cuyas filas de marcadores contenían más de UINT16_MAX columnas. El impacto de esta corrupción de memoria va desde un filtrado de información hasta una ejecución de código arbitrario, dependiendo de cómo y dónde es usado \"cmark-gfm\". Si \"cmark-gfm\" es usado para renderizar markdown controlado por usuarios remotos, esta vulnerabilidad puede conllevar a una Ejecución de Código Remota (RCE) en aplicaciones que empleen versiones afectadas de la biblioteca \"cmark-gfm\". Esta vulnerabilidad ha sido parcheada en las siguientes versiones de cmark-gfm: 0.29.0.gfm.3 y 0.28.3.gfm.21. Se presenta una medida de mitigación disponible. La vulnerabilidad se presenta en las extensiones de tablas markdown de cmark-gfm. Si es deshabilitada la extensión de la tabla, podrá evitarse que sea producida esta vulnerabilidad"
    }
  ],
  "lastModified": "2026-06-17T04:32:22.620",
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