| Severity |
|
| Remote |
|
| Type |
| - |
Unknown |
| + |
Denial of service |
|
| Description |
| + |
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. |
|
| References |
| + |
https://matrix.org/blog/2021/06/14/adventures-in-fuzzing-libolm/ |
| + |
https://gitlab.matrix.org/matrix-org/olm/-/merge_requests/27 |
| + |
https://gitlab.matrix.org/matrix-org/olm/-/commit/ccc0d122ee1b4d5e5ca4ec1432086be17d5f901b |
|
| Notes |
|