CVE-2021-34813
Matrix libolm before 3.2.3 allows a malicious Matrix homeserver to cra ...
Einstufung nach Quelle
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
| Quelle | Paket | Behoben in |
|---|---|---|
| debian 10 | olm | kein Fix angegeben |
| debian 11 | olm | kein Fix angegeben |
| debian 12 | olm | 3.2.3~dfsg-3 |
| debian 13 | olm | 3.2.3~dfsg-3 |
| debian 14 | olm | 3.2.3~dfsg-3 |
| echo | olm | 3.2.3~dfsg-3 |
| ubuntu 20.04-ESM | olm | 3.1.3+dfsg-2ubuntu0.1~esm1 |
Referenzen
- https://gitlab.matrix.org/matrix-org/olm/-/commit/ccc0d122ee1b4d5e5ca4ec1432086be17d5f901b
- https://gitlab.matrix.org/matrix-org/olm/-/releases/3.2.3
- https://matrix.org/blog/2021/06/14/adventures-in-fuzzing-libolm
- https://ubuntu.com/security/notices/USN-5194-1
- https://www.cve.org/CVERecord?id=CVE-2021-34813