Description
ejabberd before 2.1.13 does not enforce the starttls_required setting when compression is used, which causes clients to establish connections without encryption.
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 | ejabberd | 14.07-3 | — |
| Debian 13 | ejabberd | 14.07-3 | — |
| Debian 12 | ejabberd | 14.07-3 | — |
| Debian 7 | ejabberd | 2.1.10-4+deb7u2 | DLA-881-1 |
Advisories 1
- DLA-881-1 ejabberd - security update Debian Security (DSA / DLA) · Mar 9, 2026
References
- [oss-security] 20141013 CVE request: ejabberd compression allows cirucumvention of encryption despite starttls_required mailing-list
- [Operators] 20141013 ejabberd: compression allows circumvention of encryption mailing-list
- http://advisories.mageia.org/MGASA-2014-0417.html
- https://github.com/processone/ejabberd/commit/7bdc1151b
- https://bugzilla.redhat.com/show_bug.cgi?id=1153839
- MDVSA-2014:207 vendor-advisory
- 70415 vdb-entry
- MDVSA-2015:175 vendor-advisory