Vulnerabilidades / CVE-2021-34813

crítica

CVE-2021-34813

Matrix libolm before 3.2.3 allows a malicious Matrix homeserver to cra ...

Publicada Modificada CWE 787
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

La etiqueta propia de Trivy es CRITICAL. Crítica según NVD. Más baja según Ubuntu (media).

Descripción

Matrix libolm before 3.2.3 allows a malicious Matrix homeserver to crash a client (while it is attempting to retrieve an Olm encrypted room key backup from the homeserver) because olm_pk_decrypt has a stack-based buffer overflow. Remote code execution might be possible for some nonstandard build configurations.

Paquetes afectados y versiones corregidas

FuentePaqueteCorregido en
debian 10olmsin corrección indicada
debian 11olmsin corrección indicada
debian 12olm3.2.3~dfsg-3
debian 13olm3.2.3~dfsg-3
debian 14olm3.2.3~dfsg-3
echoolm3.2.3~dfsg-3
ubuntu 20.04-ESMolm3.1.3+dfsg-2ubuntu0.1~esm1

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.