CVE-2018-10657

Published: 2 May 2018

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.

Notes

Author	Note
leosilva	code is quite different in bionic and artful versus patch.

Priority

Cvss 3 Severity Score

7.5

Score breakdown

Status

Package	Release	Status
matrix-synapse Launchpad, Ubuntu, Debian	artful	Ignored (end of life)
	bionic	Released (0.24.0+dfsg-1ubuntu0.1~esm1) Available with Ubuntu Pro
	cosmic	Released (0.28.1+dfsg-1)
	disco	Released (0.28.1+dfsg-1)
	eoan	Released (0.28.1+dfsg-1)
	focal	Released (0.28.1+dfsg-1)
	groovy	Released (0.28.1+dfsg-1)
	hirsute	Released (0.28.1+dfsg-1)
	impish	Released (0.28.1+dfsg-1)
	jammy	Released (0.28.1+dfsg-1)
	kinetic	Released (0.28.1+dfsg-1)
	lunar	Released (0.28.1+dfsg-1)
	trusty	Does not exist
	upstream	Released (0.28.1+dfsg-1)
	xenial	Does not exist
	Patches: upstream: https://github.com/matrix-org/synapse/commit/33f469ba19586bbafa0cf2c7d7c35463bdab87eb

Severity score breakdown

Parameter	Value
Base score	7.5
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality	None
Integrity impact	None
Availability impact	High
Vector	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

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