It was discovered that Prosody, a lightweight Jabber/XMPP server, does not properly validate client-provided parameters during XMPP stream restarts, allowing authenticated users to override the realm associated with their session, potentially bypassing security policies and allowing impersonation. Details can be found in the upstream advisory at https://prosody.im/security/advisory_20180531/ For the oldstable distribution (jessie), this problem has been fixed in version 0.9.7-2+deb8u4. For the stable distribution (stretch), this problem has been fixed in version 0.9.12-2+deb9u2. We recommend that you upgrade your prosody packages. For the detailed security status of prosody please refer to its security tracker page at: https://security-tracker.debian.org/tracker/prosody
It was discovered that Prosody, a lightweight Jabber/XMPP server, does not properly validate client-provided parameters during XMPP stream restarts, allowing authenticated users to override the realm associated with their session, potentially bypassing security policies and allowing impersonation.
Details can be found in the upstream advisory at https://prosody.im/security/advisory_20180531/
For the oldstable distribution (jessie), this problem has been fixed in version 0.9.7-2+deb8u4.
For the stable distribution (stretch), this problem has been fixed in version 0.9.12-2+deb9u2.
We recommend that you upgrade your prosody packages.
For the detailed security status of prosody please refer to its security tracker page at: https://security-tracker.debian.org/tracker/prosody
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