VulnerabilityModified
CVE-2018-16515
Matrix Synapse before 0.33.3.1 allows remote attackers to spoof events and possibly have unspecified other impacts by leveraging improper transaction and event signature validation.
HIGH 8.8EPSS 1.54%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.54%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
Matrix Synapse before 0.33.3.1 allows remote attackers to spoof events and possibly have unspecified other impacts by leveraging improper transaction and event signature validation.
- CVSS 3.0
- 8.8 HIGHCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 1.54% probability · 73th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-347
- Affected
- matrix/synapse · debian/debian linux
- Source
- cve@mitre.org
References
- https://github.com/matrix-org/synapse/issues/3796#event-1833126269Patch, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IRW7YR2H3ASUSYX4AO4KMY3FNVDNYW3P/
- https://matrix.org/blog/2018/09/06/critical-security-update-synapse-0-33-3-1/Vendor Advisory
- https://github.com/matrix-org/synapse/issues/3796#event-1833126269Patch, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IRW7YR2H3ASUSYX4AO4KMY3FNVDNYW3P/
- https://matrix.org/blog/2018/09/06/critical-security-update-synapse-0-33-3-1/Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.