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CVE-2023-38700

matrix-appservice-irc events can be crafted to leak parts of targeted messages from other bridged rooms

Published: Aug 4, 2023Updated: Nov 21, 2024 Sources: CVE List NVD GHSACWE-200
NVD MITRE
3.5CVSSLOW
EPSS Score
0.5%
Top 62.1%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

matrix-appservice-irc is a Node.js IRC bridge for Matrix. Prior to version 1.0.1, it was possible to craft an event such that it would leak part of a targeted message event from another bridged room. This required knowing an event ID to target. Version 1.0.1n fixes this issue. As a workaround, set the `matrixHandler.eventCacheSize` config value to `0`. This workaround may impact performance.

CVSS Vector Breakdown

AV:NAC:HPR:LUI:NS:CC:LI:NA:N
Exploitability
AV:NAttack Vector
Network
AC:HAttack Complexity
High
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:CScope
Changed
Impact
C:LConfidentiality
Low
I:NIntegrity
None
A:NAvailability
None
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Weaknesses

CWE-200NVD-CWE-noinfo

Affected Products

matrix irc bridgematrix
Mixed
Communications / messaging-chat
matrix-appservice-ircmatrix-org
Mixed
Communications / messaging-chat
matrix-appservice-ircnpmOSS Libraries
matrixoss-projectGBCommunicationsaka synapse, matrix irc bridge, javascript sdk
matrix-orgoss-projectDECommunicationsaka synapse, matrix-js-sdk, matrix appservice irc
npmpackage-ecosystemOSS Libraries

Attack Graph

Products CVE Techniques Tactics

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Exploitability

Official Patch Available

MITRE ATT&CK

1 technique
Collection
View detailed technique mapping

References

https://github.com/matrix-org/matrix-appservice-irc/commit/8bbd2b69a16cbcbeffdd9b5c973fd89d61498d75
github.com
https://github.com/matrix-org/matrix-appservice-irc/releases/tag/1.0.1
github.com
https://github.com/matrix-org/matrix-appservice-irc/security/advisories/GHSA-c7hh-3v6c-fj4q
github.com
and 2 more references View all →

Timeline

Published
Aug 4, 2023
Last Updated
Nov 21, 2024

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