CVE-2022-39203
HIGH8.8EPSS 0.31%Parsing issue in matrix-org/node-irc leading to room takeovers
描述
### Impact 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. ### Patched The vulnerability has been patched in matrix-appservice-irc 0.35.0. ### Workarounds 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. ### 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 [[email protected]](mailto:[email protected]).
受影響套件(1)
- npm/matrix-appservice-ircfrom 0, < 0.35.0
CVSS 分數
| 來源 | 版本 | 嚴重程度 | 向量 |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH8.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
參考連結(4)
- ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2022-39203
- PATCHhttps://github.com/matrix-org/matrix-appservice-irc
- WEBhttps://github.com/matrix-org/matrix-appservice-irc/security/advisories/GHSA-xvqg-mv25-rwvw
- WEBhttps://matrix.org/blog/2022/09/13/security-release-of-matrix-appservice-irc-0-35-0-high-severity