Description
The mod_dialback module in Prosody before 0.9.9 does not properly generate random values for the secret token for server-to-server dialback authentication, which makes it easier for attackers to spoof servers via a brute force attack.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | prosody | 0.9.9-1 | — |
| Debian 13 | prosody | 0.9.9-1 | — |
| Debian 12 | prosody | 0.9.9-1 | — |
| Debian 8 | prosody | 0.9.7-2+deb8u2 | DSA-3439-1 |
| Debian 7 | prosody | 0.8.2-4+deb7u3 | DSA-3439-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 6.0 | prosody | 0.7.0-1squeeze1+deb6u1 | DLA-391-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 14.04 LTS | prosody | 0.9.1-1ubuntu0.1 | — |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | prosody | 0.9.11-1.1 | openSUSE-SU-2024:10489-1 |
Advisories 3
- DSA-3439-1 prosody - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-391-1 prosody - security update Debian Security (DSA / DLA) · Mar 9, 2026
- openSUSE-SU-2024:10489-1 prosody-0.9.11-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
References
- https://prosody.im/issues/issue/571
- FEDORA-2016-e289f41b76 vendor-advisory
- FEDORA-2016-38e48069f8 vendor-advisory
- DSA-3439 vendor-advisory
- http://blog.prosody.im/prosody-0-9-9-security-release/
- https://prosody.im/security/advisory_20160108-2/
- [oss-security] 20160108 CVE-2016-1231, CVE-2016-1232: Prosody XMPP server multiple vulnerabilities mailing-list