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CVE-2021-32687

Estado: ModificadaAlta (7.5)—

Redis is an open source, in-memory database that persists on disk. An integer overflow bug affecting all versions of Redis can be exploited to corrupt the heap and potentially be used to leak arbitrary contents of the heap or trigger remote code execution. The vulnerability involves changing the default set-max-intset-entries configuration parameter to a very large value and constructing specially crafted commands to manipulate sets. The problem is fixed in Redis versions 6.2.6, 6.0.16 and 5.0.14. An additional workaround to mitigate the problem without patching the redis-server executable is to prevent users from modifying the set-max-intset-entries configuration parameter. This can be done using ACL to restrict unprivileged users from using the CONFIG SET command.

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 (6)

Debian — Debian LinuxFedoraproject — FedoraNetapp — Management Services FOR Element SoftwareNetapp — Management Services FOR Netapp HCIOracle — Communications Operations MonitorRedis — Redis

CWE

Referencias

JSON original (NVD)

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    {
      "lang": "en",
      "value": "Redis is an open source, in-memory database that persists on disk. An integer overflow bug affecting all versions of Redis can be exploited to corrupt the heap and potentially be used to leak arbitrary contents of the heap or trigger remote code execution. The vulnerability involves changing the default set-max-intset-entries configuration parameter to a very large value and constructing specially crafted commands to manipulate sets. The problem is fixed in Redis versions 6.2.6, 6.0.16 and 5.0.14. An additional workaround to mitigate the problem without patching the redis-server executable is to prevent users from modifying the set-max-intset-entries configuration parameter. This can be done using ACL to restrict unprivileged users from using the CONFIG SET command."
    },
    {
      "lang": "es",
      "value": "Redis es una base de datos en memoria de código abierto que persiste en el disco. Un error de desbordamiento de enteros que afecta a todas las versiones de Redis puede ser explotado para corromper la pila y potencialmente ser usado para filtrar contenidos arbitrarios de la pila o desencadenar una ejecución de código remota . La vulnerabilidad implica cambiar el parámetro de configuración por defecto set-max-intset-entries a un valor muy grande y construir comandos especialmente diseñados para manipular conjuntos. El problema se ha corregido en las versiones de Redis 6.2.6, 6.0.16 y 5.0.14. Una solución adicional para mitigar el problema sin parchear el ejecutable de redis-server es evitar que los usuarios modifiquen el parámetro de configuración set-max-intset-entries. Esto puede hacerse usando ACL para restringir a usuarios sin privilegios el uso del comando CONFIG SET"
    }
  ],
  "lastModified": "2026-06-17T03:53:25.510",
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