CVE-2018-10657
Matrix Synapse DoS
7.5
HIGH
CVSS 3.1
EPSS 0.46%
Description
Matrix Synapse before 0.28.1 is prone to a denial of service flaw where malicious events injected with depth = 2^63 - 1 render rooms unusable, related to federation/federation_base.py and handlers/message.py, as exploited in the wild in April 2018.
How to fix CVE-2018-10657
To remediate CVE-2018-10657, upgrade the affected package to a fixed version below.
- Debian/matrix-synapse—upgrade to 0.28.1+dfsg-1 or later
- —upgrade to 0.28.1 or later
Is CVE-2018-10657 being exploited?
Low — EPSS is 0.5%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 0.28.1+dfsg-1
- from 0, < 0.28.1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |