Vulnerabilidades / CVE-2026-34582

crítica

CVE-2026-34582

botan: Botan: Client authentication bypass in TLS 1.3 implementation

Publicada Modificada CWE 841, 166
En la Trivy database desde, como mínimo, el 24 oct 2026, 07:11 UTCNo consta cuándo entró antes de ese build.

Severidad por fuente

NVD9.1CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Red Hat9.1CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

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

Descripción

Botan is a C++ cryptography library. Prior to version 3.11.1, the TLS 1.3 implementation allowed ApplicationData records to be processed prior to the Finished message being received. A server which is attempting to enforce client authentication via certificates can by bypassed by a client which entirely omits Certificate, CertificateVerify, and the Finished message and instead sends application data records. This vulnerability is fixed in 3.11.1.

Paquetes afectados y versiones corregidas

FuentePaqueteCorregido en
alpine 3.24botan33.11.1-r0
alpine edgebotan33.11.1-r0
debian 13botan33.11.0+dfsg-2
debian 14botan33.11.0+dfsg-2
echobotan33.11.0+dfsg-2
rapidfort debian 12botan30:3.11.0+dfsg-2
rapidfort debian 13botan30:3.11.0+dfsg-2

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.