by Kastro
Paper/Archive/CVE-2023-38690

CVE-2023-38690

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

EPSS 0.9%CVSS 9.8
critical.is priorityof 100
41
CVSS 9.8 (NVD)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 58.6.586 × 2011.7No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
matrix-appservice-irc< 1.0.1–CNA
matrix-appservice-irc< 1.0.11.0.1CISA-ADP

Scores by source

NVD9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
GitHub_M (CNA)5.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: partial

References

refgithub.com/matrix-org/matrix-appservice-irc/security/advisories/GHSA-3pmj-jqqp-2mj3refgithub.com/matrix-org/matrix-appservice-irc/commit/0afb064635d37e039067b5b3d6423448b93026d3refgithub.com/matrix-org/matrix-appservice-irc/releases/tag/1.0.1