Description
Race condition in the XMPP library in Smack before 4.1.9, when the SecurityMode.required TLS setting has been set, allows man-in-the-middle attackers to bypass TLS protections and trigger use of cleartext for client authentication by stripping the "starttls" feature from a server response.
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Maven | org.igniterealtime.smack:smack-core | < 4.1.9 | 4.1.9 | GHSA-66pq-hqv5-228g |
References
- https://github.com/igniterealtime/Smack/commit/059ee99ba0d5ff7758829acf5a9aeede09ec820b
- FEDORA-2016-897a1e6698 vendor-advisory
- 95129 vdb-entry
- https://issues.igniterealtime.org/projects/SMACK/issues/SMACK-739
- https://github.com/igniterealtime/Smack/commit/a9d5cd4a611f47123f9561bc5a81a4555fe7cb04
- [oss-security] 20161222 Re: CVE Request: Smack: TLS SecurityMode.required not always enforced, leading to striptls attack mailing-list
- https://community.igniterealtime.org/blogs/ignite/2016/11/22/smack-security-advisory-2016-11-22