FKIE_CVE-2021-20235

Vulnerability from fkie_nvd - Published: 2021-04-01 14:15 - Updated: 2024-11-21 05:46
Severity ?
8.1 (High) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Summary
There's a flaw in the zeromq server in versions before 4.3.3 in src/decoder_allocators.hpp. The decoder static allocator could have its sized changed, but the buffer would remain the same as it is a static buffer. A remote, unauthenticated attacker who sends a crafted request to the zeromq server could trigger a buffer overflow WRITE of arbitrary data if CURVE/ZAP authentication is not enabled. The greatest impact of this flaw is to application availability, data integrity, and confidentiality.
References
secalert@redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=1921983Issue Tracking, Patch, Third Party Advisory
secalert@redhat.comhttps://github.com/zeromq/libzmq/security/advisories/GHSA-fc3w-qxf5-7hp6Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://bugzilla.redhat.com/show_bug.cgi?id=1921983Issue Tracking, Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/zeromq/libzmq/security/advisories/GHSA-fc3w-qxf5-7hp6Patch, Third Party Advisory
Impacted products
Vendor Product Version
zeromq libzmq *
To clipboard 

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              "criteria": "cpe:2.3:a:zeromq:libzmq:*:*:*:*:*:*:*:*",
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  "descriptions": [
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      "lang": "en",
      "value": "There\u0027s a flaw in the zeromq server in versions before 4.3.3 in src/decoder_allocators.hpp. The decoder static allocator could have its sized changed, but the buffer would remain the same as it is a static buffer. A remote, unauthenticated attacker who sends a crafted request to the zeromq server could trigger a buffer overflow WRITE of arbitrary data if CURVE/ZAP authentication is not enabled. The greatest impact of this flaw is to application availability, data integrity, and confidentiality."
    },
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      "lang": "es",
      "value": "Se presenta un fallo en el servidor zeromq en versiones anteriores a 4.3.3, en el archivo src/decoder_allocators.hpp.\u0026#xa0;Se podr\u00eda cambiar el tama\u00f1o del asignador est\u00e1tico del decodificador, pero el b\u00fafer permanecer\u00eda igual, ya que es un b\u00fafer est\u00e1tico.\u0026#xa0;Un atacante no autenticado remoto que env\u00eda una petici\u00f3n dise\u00f1ada al servidor zeromq podr\u00eda desencadenar un desbordamiento del b\u00fafer WRITE de datos arbitrarios si la autenticaci\u00f3n CURVE/ZAP no est\u00e1 habilitada.\u0026#xa0;El mayor impacto de este fallo es la disponibilidad de la aplicaci\u00f3n, la integridad de los datos y la confidencialidad."
    }
  ],
  "id": "CVE-2021-20235",
  "lastModified": "2024-11-21T05:46:11.220",
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          "availabilityImpact": "PARTIAL",
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  "vulnStatus": "Modified",
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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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