Vulnerability 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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Igniterealtime | Smack | < 4.1.9 |
| Fedoraproject | Fedora | 25 |
Related Weaknesses (CWE)
References
- http://www.openwall.com/lists/oss-security/2016/12/22/12Mailing ListPatchThird Party Advisory
- http://www.securityfocus.com/bid/95129Third Party AdvisoryVDB Entry
- https://community.igniterealtime.org/blogs/ignite/2016/11/22/smack-security-adviVendor Advisory
- https://github.com/igniterealtime/Smack/commit/059ee99ba0d5ff7758829acf5a9aeede0PatchThird Party Advisory
- https://github.com/igniterealtime/Smack/commit/a9d5cd4a611f47123f9561bc5a81a4555PatchThird Party Advisory
- https://issues.igniterealtime.org/projects/SMACK/issues/SMACK-739Issue TrackingVendor Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- http://www.openwall.com/lists/oss-security/2016/12/22/12Mailing ListPatchThird Party Advisory
- http://www.securityfocus.com/bid/95129Third Party AdvisoryVDB Entry
- https://community.igniterealtime.org/blogs/ignite/2016/11/22/smack-security-adviVendor Advisory
- https://github.com/igniterealtime/Smack/commit/059ee99ba0d5ff7758829acf5a9aeede0PatchThird Party Advisory
- https://github.com/igniterealtime/Smack/commit/a9d5cd4a611f47123f9561bc5a81a4555PatchThird Party Advisory
- https://issues.igniterealtime.org/projects/SMACK/issues/SMACK-739Issue TrackingVendor Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
FAQ
What is CVE-2016-10027?
CVE-2016-10027 is a vulnerability with a CVSS score of 5.9 (MEDIUM). 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 clear...
How severe is CVE-2016-10027?
CVE-2016-10027 has been rated MEDIUM with a CVSS base score of 5.9/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2016-10027?
Check the references section above for vendor advisories and patch information. Affected products include: Igniterealtime Smack, Fedoraproject Fedora.