CVE-2016-10027
MEDIUM
5.9
CVSS Score
Published: January 12, 2017 at 11:00 PM UTC
Updated: June 17, 2026 at 12:38 AM UTC
2 products affected across 2 vendorsFedoraSmack
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Severity
MEDIUM5.9
Exploit prediction
EPSS 2%
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
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
95%
v < 4.1.9
Affected range stops below 4.1.9, so it looks safe — our inference, not a vendor statement
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
- http://www.openwall.com/lists/oss-security/2016/12/22/12
- https://community.igniterealtime.org/blogs/ignite/2016/11/22/smack-security-advisory-2016-11-22
- https://github.com/igniterealtime/Smack/commit/059ee99ba0d5ff7758829acf5a9aeede09ec820b
- https://github.com/igniterealtime/Smack/commit/a9d5cd4a611f47123f9561bc5a81a4555fe7cb04
- https://issues.igniterealtime.org/projects/SMACK/issues/SMACK-739
References (7)
Mailing Listx_refsource_MLISTPatchThird Party Advisory
Source: [email protected]
http://www.openwall.com/lists/oss-security/2016/12/22/12VDB Entryx_refsource_BIDThird Party Advisory
Source: [email protected]
http://www.securityfocus.com/bid/95129x_refsource_CONFIRMVendor Advisory
Source: [email protected]
https://community.igniterealtime.org/blogs/ignite/2016/11/22/smack-security-advisory-2016-11-22x_refsource_CONFIRMPatchThird Party Advisory
Source: [email protected]
https://github.com/igniterealtime/Smack/commit/059ee99ba0d5ff7758829acf5a9aeede09ec820bx_refsource_CONFIRMPatchThird Party Advisory
Source: [email protected]
https://github.com/igniterealtime/Smack/commit/a9d5cd4a611f47123f9561bc5a81a4555fe7cb04x_refsource_CONFIRMIssue TrackingVendor Advisory
Source: [email protected]
https://issues.igniterealtime.org/projects/SMACK/issues/SMACK-739Vendor Advisoryx_refsource_FEDORA
Source: [email protected]
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/J4WXAZ4JVJXHMEDDXJVWJHPVBF5QCTZF/CVSS
- Attack Vector
- NETWORK
- Complexity
- HIGH
- Privileges
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- HIGH
- Integrity
- NONE
- Availability
- NONE
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-362
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