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CVE-2016-10027 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:5.9 MEDIUMVector:CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://community.igniterealtime.org/blogs/ignite/2016/11/22/smack-security-advisory-2016-11-22	CVE	Vendor Advisory
https://github.com/igniterealtime/Smack/commit/059ee99ba0d5ff7758829acf5a9aeede09ec820b	CVE	PatchThird Party Advisory
https://github.com/igniterealtime/Smack/commit/a9d5cd4a611f47123f9561bc5a81a4555fe7cb04	CVE	PatchThird Party Advisory
https://issues.igniterealtime.org/projects/SMACK/issues/SMACK-739	CVE	Issue TrackingVendor Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/J4WXAZ4JVJXHMEDDXJVWJHPVBF5QCTZF/	CVE
http://www.openwall.com/lists/oss-security/2016/12/22/12	CVE	Mailing ListPatchThird Party Advisory
http://www.securityfocus.com/bid/95129	CVE	Third Party AdvisoryVDB Entry
https://community.igniterealtime.org/blogs/ignite/2016/11/22/smack-security-advisory-2016-11-22	[email protected]	Vendor Advisory
https://github.com/igniterealtime/Smack/commit/059ee99ba0d5ff7758829acf5a9aeede09ec820b	[email protected]	PatchThird Party Advisory
https://github.com/igniterealtime/Smack/commit/a9d5cd4a611f47123f9561bc5a81a4555fe7cb04	[email protected]	PatchThird Party Advisory
https://issues.igniterealtime.org/projects/SMACK/issues/SMACK-739	[email protected]	Issue TrackingVendor Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/J4WXAZ4JVJXHMEDDXJVWJHPVBF5QCTZF/	[email protected]
http://www.openwall.com/lists/oss-security/2016/12/22/12	[email protected]	Mailing ListPatchThird Party Advisory
http://www.securityfocus.com/bid/95129	[email protected]	Third Party AdvisoryVDB Entry

see all 14 references

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-362	Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')	[email protected]

Affected Products

Product	Versions
igniterealtime smack	< 4.1.9
CPE cpe:2.3:a:igniterealtime:smack:::::::: Remediation No remediation found in references.
fedoraproject fedora	25
CPE cpe:2.3:o:fedoraproject:fedora:25:::::::* Remediation No remediation found in references.

Change History

7 change records found show changes

Date	Action	Recorded By
Jun 17, 2026	CVE Modified	[email protected]
May 6, 2026	Status Change	[email protected]
Nov 21, 2024	CVE Modified	CVE
May 14, 2024	CVE Modified	[email protected]
Nov 7, 2023	CVE Modified	[email protected]
Feb 23, 2021	Reanalysis	[email protected]
Jan 18, 2017	Initial Analysis	[email protected]