| ID |
CVE-2021-29471
|
| Sažetak |
Synapse is a Matrix reference homeserver written in python (pypi package matrix-synapse). Matrix is an ecosystem for open federated Instant Messaging and VoIP. In Synapse before version 1.33.2 "Push rules" can specify conditions under which they will match, including `event_match`, which matches event content against a pattern including wildcards. Certain patterns can cause very poor performance in the matching engine, leading to a denial-of-service when processing moderate length events. The issue is patched in version 1.33.2. A potential workaround might be to prevent users from making custom push rules, by blocking such requests at a reverse-proxy. |
| Reference |
|
| CVSS |
| Base: | 5.0 |
| Impact: | 2.9 |
| Exploitability: | 10.0 |
|
| Pristup |
| Vektor | Složenost | Autentikacija |
| NETWORK |
LOW |
NONE |
|
| Impact |
| Povjerljivost | Cjelovitost | Dostupnost |
| NONE |
NONE |
PARTIAL |
|
| CVSS vektor |
AV:N/AC:L/Au:N/C:N/I:N/A:P |
| Zadnje važnije ažuriranje |
07-11-2023 - 03:32 |
| Objavljeno |
11-05-2021 - 15:15 |
