Description ----------- The flaw allows a malicious server to impersonate the vulnerable domain to any XMPP domain whose domain name includes the attacker's domain as a suffix. For example, 'bber.example' would be able to connect to 'jabber.example' and successfully impersonate any vulnerable server on the network. Affected configurations ----------------------- The default configuration is affected. Servers with mod_dialback disabled are not affected. Servers with s2s_secure_auth enabled will reject incoming impersonation attempts (that is, servers attempting to impersonate other domains will be rejected), but may still be impersonated to other servers on the network. Temporary mitigation -------------------- Disable mod_dialback by adding "dialback" to your modules_disabled list in the global section of your config file, and restart Prosody: modules_disabled = { "dialback" } Note that disabling dialback will affect interoperability with servers that do not have trusted TLS certificates.
*** Bug 1302485 has been marked as a duplicate of this bug. ***
External References: https://prosody.im/security/advisory_20160127/
Created prosody tracking bugs for this issue: Affects: epel-all [bug 1302566]
Created prosody tracking bugs for this issue: Affects: fedora-all [bug 1302565]
prosody-0.9.10-1.fc22 has been pushed to the Fedora 22 stable repository. If problems still persist, please make note of it in this bug report.
prosody-0.9.10-1.fc23 has been pushed to the Fedora 23 stable repository. If problems still persist, please make note of it in this bug report.
prosody-0.9.10-1.el7 has been pushed to the Fedora EPEL 7 stable repository. If problems still persist, please make note of it in this bug report.
prosody-0.9.10-1.el6 has been pushed to the Fedora EPEL 6 stable repository. If problems still persist, please make note of it in this bug report.
This CVE Bugzilla entry is for community support informational purposes only as it does not affect a package in a commercially supported Red Hat product. Refer to the dependent bugs for status of those individual community products.