Описание
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.
| Релиз | Статус | Примечание |
|---|---|---|
| bionic | ignored | end of standard support, was needed |
| esm-apps/bionic | needed | |
| esm-apps/focal | needed | |
| esm-apps/jammy | needed | |
| esm-apps/noble | not-affected | 1.64.0-3 |
| esm-infra-legacy/trusty | DNE | |
| focal | ignored | end of standard support, was needed |
| groovy | ignored | end of life |
| hirsute | ignored | end of life |
| impish | ignored | end of life |
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5 Medium
CVSS2
3.7 Low
CVSS3
Связанные уязвимости
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.
Synapse is a Matrix reference homeserver written in python (pypi packa ...
Denial of service attack via push rule patterns in matrix-synapse
Уязвимость правил push домашнего сервера Synapse, связанная с неконтролируемым расходом ресурсов, позволяющая нарушителю вызвать отказ в обслуживании
5 Medium
CVSS2
3.7 Low
CVSS3