CVE-2022-39203

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Summary

CVECVE-2022-39203
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2022-09-13 19:15:00 UTC
Updated2022-09-16 02:38:00 UTC
Descriptionmatrix-appservice-irc is an open source Node.js IRC bridge for Matrix. Attackers can specify a specific string of characters, which would confuse the bridge into combining an attacker-owned channel and an existing channel, allowing them to grant themselves permissions in the channel. The vulnerability has been patched in matrix-appservice-irc 0.35.0. As a workaround operators may disable dynamic channel joining via `dynamicChannels.enabled` to prevent users from joining new channels, which prevents any new channels being bridged outside of what is already bridged, and what is specified in the config.

Risk And Classification

Problem Types: CWE-269

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Matrix Matrix Irc Bridge All All All All

References

ReferenceSourceLinkTags
Security release of matrix-appservice-irc 0.35.0 (High severity) | Matrix.org MISC matrix.org
Parsing issue in matrix-org/node-irc leading to room takeovers · Advisory · matrix-org/matrix-appservice-irc · GitHub CONFIRM github.com
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NVD vulnerability detail NVD nvd.nist.gov canonical, analysis
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