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Vulnerabilidades / CVE-2021-3466

crítica

CVE-2021-3466

libmicrohttpd: Buffer overflow issue in URL parser in the post_process_urlencoded function

Publicada Modificada CWE 120
En la Trivy database desde, como mínimo, el 24 oct 2026, 07:11 UTCNo consta cuándo entró antes de ese build.

Severidad por fuente

NVD9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Red Hat8.1CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

La etiqueta propia de Trivy es CRITICAL. Crítica según NVD. Más baja según Red Hat (alta).

Descripción

A flaw was found in libmicrohttpd. A missing bounds check in the post_process_urlencoded function leads to a buffer overflow, allowing a remote attacker to write arbitrary data in an application that uses libmicrohttpd. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability. Only version 0.9.70 is vulnerable.

Paquetes afectados y versiones corregidas

FuentePaqueteCorregido en
debian 11libmicrohttpd0.9.71-1
debian 12libmicrohttpd0.9.71-1
debian 13libmicrohttpd0.9.71-1
debian 14libmicrohttpd0.9.71-1
echolibmicrohttpd, libmicrohttpd-0.9.700.9.71-1 y 1 más
Mostrar las 6 entradas de 5 fuentes
FuentePaqueteCorregido en
debian 11libmicrohttpd0.9.71-1
debian 12libmicrohttpd0.9.71-1
debian 13libmicrohttpd0.9.71-1
debian 14libmicrohttpd0.9.71-1
echolibmicrohttpd0.9.71-1
echolibmicrohttpd-0.9.700.9.70+e1

Referencias

Vulnerability data compiled from the Trivy vulnerability database (trivy-db, Aqua Security, Apache License 2.0), which aggregates third-party advisories. CVE records are published by The MITRE Corporation under the CVE Terms of Use; CVE is a trademark of MITRE. This product uses data from the NVD API but is not endorsed or certified by the NVD. Severity, titles and advisory data from the GitHub Advisory Database (CC BY 4.0), Red Hat security data (CC BY 4.0) and the other sources linked on each entry. Entries may be summarised or re-formatted; the linked original is the authoritative record.