Vulnerability Monitor

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CVE-2016-10027

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.

Published

2017-01-12T23:59:00.197

Last Modified

2025-04-20T01:37:25.860

Status

Deferred

Source

[email protected]

Severity

CVSSv3.1: 5.9 (MEDIUM)

CVSSv2 Vector

AV:N/AC:M/Au:N/C:P/I:N/A:N

Access Vector: NETWORK
Access Complexity: MEDIUM
Authentication: NONE
Confidentiality Impact: PARTIAL
Integrity Impact: NONE
Availability Impact: NONE

Exploitability Score

8.6

Impact Score

2.9

Weaknesses

Type: Primary
CWE-362

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	igniterealtime	smack	< 4.1.9	Yes
Operating System	fedoraproject	fedora	25	Yes

References

http://www.openwall.com/lists/oss-security/2016/12/22/12 Mailing List, Patch, Third Party Advisory ([email protected])
http://www.securityfocus.com/bid/95129 Third Party Advisory, VDB Entry ([email protected])
https://community.igniterealtime.org/blogs/ignite/2016/11/22/smack-security-advisory-2016-11-22 Vendor Advisory ([email protected])
https://github.com/igniterealtime/Smack/commit/059ee99ba0d5ff7758829acf5a9aeede09ec820b Patch, Third Party Advisory ([email protected])
https://github.com/igniterealtime/Smack/commit/a9d5cd4a611f47123f9561bc5a81a4555fe7cb04 Patch, Third Party Advisory ([email protected])
https://issues.igniterealtime.org/projects/SMACK/issues/SMACK-739 Issue Tracking, Vendor Advisory ([email protected])
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 Mailing List, Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.securityfocus.com/bid/95129 Third Party Advisory, VDB Entry (af854a3a-2127-422b-91ae-364da2661108)
https://community.igniterealtime.org/blogs/ignite/2016/11/22/smack-security-advisory-2016-11-22 Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://github.com/igniterealtime/Smack/commit/059ee99ba0d5ff7758829acf5a9aeede09ec820b Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://github.com/igniterealtime/Smack/commit/a9d5cd4a611f47123f9561bc5a81a4555fe7cb04 Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://issues.igniterealtime.org/projects/SMACK/issues/SMACK-739 Issue Tracking, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/J4WXAZ4JVJXHMEDDXJVWJHPVBF5QCTZF/ (af854a3a-2127-422b-91ae-364da2661108)