Bug 1574779 (CVE-2018-10657)

Summary:	CVE-2018-10657 matrix-synapse: Injection of malicious events with a depth size of 2^63-1 can cause a denial of service to making rooms unusable
Product:	[Other] Security Response	Reporter:	Sam Fowler <sfowler>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED UPSTREAM	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	jeremy
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	matrix-synapse 0.28.1	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2019-06-10 10:21:10 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	1574780
Bug Blocks:

Description Sam Fowler 2018-05-04 02:52:12 UTC

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.


External Reference:

https://matrix.org/blog/2018/05/01/security-update-synapse-0-28-1/


Upstream Patch:

https://github.com/matrix-org/synapse/commit/33f469ba19586bbafa0cf2c7d7c35463bdab87eb

Comment 1 Sam Fowler 2018-05-04 02:52:32 UTC

Created matrix-synapse tracking bugs for this issue:

Affects: fedora-all [bug 1574780]

Comment 2 Product Security DevOps Team 2019-06-10 10:21:10 UTC

This CVE Bugzilla entry is for community support informational purposes only as it does not affect a package in a commercially supported Red Hat product. Refer to the dependent bugs for status of those individual community products.