| packages: |
| - module: mellium.im/xmpp |
| package: mellium.im/xmpp/websocket |
| symbols: |
| - Dialer.config |
| derived_symbols: |
| - Dial |
| - DialDirect |
| - DialSession |
| - Dialer.Dial |
| - Dialer.DialDirect |
| - NewClient |
| versions: |
| - fixed: 0.21.1 |
| vulnerable_at: 0.21.0 |
| description: | |
| Websocket client connections are vulnerable to man-in-the-middle |
| attacks via DNS spoofing. |
| |
| When looking up a WSS endpoint using a DNS TXT record, the server |
| TLS certificate is incorrectly validated using the name of the |
| server returned by the TXT record request, not the name of the |
| the server being connected to. This permits any attacker that |
| can spoof a DNS record to redirect the user to a server of their |
| choosing. |
| |
| Providing a *tls.Config with a ServerName field set to the |
| correct destination hostname will avoid this issue. |
| cves: |
| - CVE-2022-24968 |
| ghsas: |
| - GHSA-h289-x5wc-xcv8 |
| links: |
| commit: https://github.com/mellium/xmpp/commit/0d92aa486da69b71f2f4a30e62aa722c711b98ac |
| advisory: https://mellium.im/cve/cve-2022-24968/ |
