CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
Percentile
52.7%
It is possible to craft a command with newlines which would not be properly parsed. This would mean you could pass a string of commands as a channel name, which would then be run by the IRC bridge bot.
Versions 1.0.1 and above are patched.
There are no robust workarounds to the bug. You can disable dynamic channels in the config to disable the most common execution method but others may exist. It is highly recommended to upgrade the bridge.
Discovered and reported by Val Lorentz.
If you have any questions or comments about this advisory email us at [email protected].
Vendor | Product | Version | CPE |
---|---|---|---|
matrix | matrix-appservice-bridge | * | cpe:2.3:a:matrix:matrix-appservice-bridge:*:*:*:*:*:node.js:*:* |
github.com/advisories/GHSA-3pmj-jqqp-2mj3
github.com/matrix-org/matrix-appservice-irc/commit/0afb064635d37e039067b5b3d6423448b93026d3
github.com/matrix-org/matrix-appservice-irc/releases/tag/1.0.1
github.com/matrix-org/matrix-appservice-irc/security/advisories/GHSA-3pmj-jqqp-2mj3
nvd.nist.gov/vuln/detail/CVE-2023-38690