Schwachstellen / CVE-2021-34813

kritisch

CVE-2021-34813

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

Veröffentlicht Geändert CWE 787
In der Trivy Database seit spätestens 24. Okt. 2026, 07:11 UTCWann der Eintrag vor diesem Build hinzukam, ist nicht erfasst.

Einstufung nach Quelle

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

Trivys eigenes Label ist CRITICAL. Kritisch laut NVD. Niedriger laut Ubuntu (mittel).

Beschreibung

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.

Betroffene Pakete und behobene Versionen

QuellePaketBehoben in
debian 10olmkein Fix angegeben
debian 11olmkein Fix angegeben
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

Referenzen

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.