CVE-2023-38700
LOW3.5EPSS 0.36%matrix-appservice-irc events can be crafted to leak parts of targeted messages from other bridged rooms
Published: 8/4/2023Modified: 11/8/2023
Also known as:GHSA-c7hh-3v6c-fj4q
Description
### Impact It was possible to craft an event such that it would leak part of a targeted message event from another bridged room. This required knowing an event ID to target. ### Patches Please upgrade to 1.0.1. ### Workarounds You can set the `matrixHandler.eventCacheSize` config value to `0` to workaround this bug. However, this may impact performance. ### 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]).
Affected packages (1)
- npm/matrix-appservice-ircfrom 0, < 1.0.1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | LOW3.5 | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:N/A:N |
References (5)
- ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2023-38700
- PATCHhttps://github.com/matrix-org/matrix-appservice-irc
- WEBhttps://github.com/matrix-org/matrix-appservice-irc/commit/8bbd2b69a16cbcbeffdd9b5c973fd89d61498d75
- WEBhttps://github.com/matrix-org/matrix-appservice-irc/releases/tag/1.0.1
- WEBhttps://github.com/matrix-org/matrix-appservice-irc/security/advisories/GHSA-c7hh-3v6c-fj4q