CVE-2022-39202 – matrix-appservice-irc

Package

Manager: npm
Name: matrix-appservice-irc
Vulnerable Version: >=0 <0.35.0

Severity

Level: Medium

CVSS v3.1: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:L/I:L/A:L

CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:A/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L

EPSS: 0.00124 pctl0.32339

Details

matrix-appservice-irc vulnerable to IRC mode parameter confusion ### Impact IRC allows you to specify multiple modes in a single mode command. Due to a bug in the underlying matrix-org/node-irc library, affected versions of matrix-appservice-irc perform parsing of such modes incorrectly, potentially resulting in the wrong user being given permissions. Mode commands can only be executed by privileged users, so this can only be abused if an operator is tricked into running the command on behalf of an attacker. ### Patches The vulnerability has been patched in matrix-appservice-irc 0.35.0. ### Workarounds Refrain from entering mode commands suggested by untrusted users. Avoid using multiple modes in a single command. ### References - https://matrix.org/blog/2022/09/13/security-release-of-matrix-appservice-irc-0-35-0-high-severity ### Credits Discovered and reported by [Val Lorentz](https://valentin-lorentz.fr/). ### For more information If you have any questions or comments about this advisory email us at [security@matrix.org](mailto:security@matrix.org).

Metadata

Created: 2022-09-15T03:26:25Z
Modified: 2022-10-07T16:25:42Z
Source: https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2022/09/GHSA-cq7q-5c67-w39w/GHSA-cq7q-5c67-w39w.json
CWE IDs: ["CWE-269"]
Alternative ID: GHSA-cq7q-5c67-w39w
Finding: F159
Auto approve: 1