CVE-2018-10657
HIGH7.5EPSS 0.46%Matrix Synapse DoS
Published: 5/14/2022Modified: 5/20/2026
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.
Affected packages (2)
- Debian/matrix-synapsefrom 0, < 0.28.1+dfsg-1
- PyPI/matrix-synapsefrom 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 |
References (6)
- ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2018-10657
- ADVISORYhttps://security-tracker.debian.org/tracker/CVE-2018-10657
- PATCHhttps://github.com/matrix-org/synapse
- WEBhttps://docs.google.com/document/d/1I3fi2S-XnpO45qrpCsowZv8P8dHcNZ4fsBsbOW7KABI/edit#heading=h.fj95ykuss7s1
- WEBhttps://github.com/matrix-org/synapse/commit/33f469ba19586bbafa0cf2c7d7c35463bdab87eb
- WEBhttps://matrix.org/blog/2018/05/01/security-update-synapse-0-28-1