Low severityNVD Advisory· Published Aug 4, 2023· Updated Oct 3, 2024
matrix-appservice-irc events can be crafted to leak parts of targeted messages from other bridged rooms
CVE-2023-38700
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.
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Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
matrix-appservice-ircnpm | < 1.0.1 | 1.0.1 |
Affected products
2- Range: < 1.0.1
Patches
Vulnerability mechanics
References
5- github.com/advisories/GHSA-c7hh-3v6c-fj4qghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2023-38700ghsaADVISORY
- github.com/matrix-org/matrix-appservice-irc/commit/8bbd2b69a16cbcbeffdd9b5c973fd89d61498d75ghsax_refsource_MISCWEB
- github.com/matrix-org/matrix-appservice-irc/releases/tag/1.0.1ghsax_refsource_MISCWEB
- github.com/matrix-org/matrix-appservice-irc/security/advisories/GHSA-c7hh-3v6c-fj4qghsax_refsource_CONFIRMWEB
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