CVE-2023-38690

matrix-appservice-irc IRC command injection via admin commands containing newlines

Description

matrix-appservice-irc is a Node.js IRC bridge for Matrix. Prior to version 1.0.1, 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. One may disable dynamic channels in the config to disable the most common execution method but others may exist.

Category

5.8
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.13%
Third-Party Advisory github.com
Affected: matrix-org matrix-appservice-irc
Published at:
Updated at:

References

Link Tags
https://github.com/matrix-org/matrix-appservice-irc/security/advisories/GHSA-3pmj-jqqp-2mj3 third party advisory
https://github.com/matrix-org/matrix-appservice-irc/commit/0afb064635d37e039067b5b3d6423448b93026d3 patch
https://github.com/matrix-org/matrix-appservice-irc/releases/tag/1.0.1 release notes

Frequently Asked Questions

What is the severity of CVE-2023-38690?
CVE-2023-38690 has been scored as a medium severity vulnerability.
How to fix CVE-2023-38690?
To fix CVE-2023-38690, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2023-38690 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2023-38690 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2023-38690?
CVE-2023-38690 affects matrix-org matrix-appservice-irc.
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