| Severity |
|
| Remote |
|
| Type |
| - |
Unknown |
| + |
Authentication bypass |
|
| Description |
| + |
A security issue was found in the Prosody.im XMPP server software before version 0.11.9. The undocumented option ‘dialback_without_dialback’ enabled an experimental feature for server-to-server authentication. A flaw in this feature meant it did not correctly authenticate remote servers, allowing a remote server to impersonate another server when this option is enabled. |
|
| References |
| + |
https://prosody.im/security/advisory_20210512/#undocumented-dialback-without-dialback-option-insecure |
| + |
https://hg.prosody.im/trunk/rev/6be890ca492e |
| + |
https://hg.prosody.im/trunk/rev/d0e9ffccdef9 |
|
| Notes |
| + |
Workaround |
| + |
========== |
| + |
|
| + |
The issue can be mitigated by removing or disabling the ‘dialback_without_dialback’ option. |
|