Information Exposure Affecting matrix-appservice-irc package, versions *


Severity

Recommended
0.0
low
0
10

CVSS assessment made by Snyk's Security Team. Learn more

Threat Intelligence

EPSS
0.08% (36th percentile)

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  • Snyk IDSNYK-JS-MATRIXAPPSERVICEIRC-5821379
  • published6 Aug 2023
  • disclosed4 Aug 2023
  • creditVal Lorentz

Introduced: 4 Aug 2023

CVE-2023-38700  (opens in a new tab)
CWE-200  (opens in a new tab)

How to fix?

A fix was pushed into the master branch but not yet published.

Overview

matrix-appservice-irc is an An IRC Bridge for Matrix

Affected versions of this package are vulnerable to Information Exposure via events that can be crafted to leak parts of targeted messages from other bridged rooms. Note: This is exploitable only when knowing an event ID to target.

Workarounds

Users can set the matrixHandler.eventCacheSize config value to 0 to workaround this bug. However, this may impact performance.

References

CVSS Scores

version 3.1