CVE-2016-4467

Severity: medium (CVSS 5.9 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.6% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2017-05-02 · updated 2026-06-17
Weakness: CWE-295

Description

The C client and C-based client bindings in the Apache Qpid Proton library before 0.13.1 on Windows do not properly verify that the server hostname matches a domain name in the subject's Common Name (CN) or subjectAltName field of the X.509 certificate when using the SChannel-based security layer, which allows man-in-the-middle attackers to spoof servers via an arbitrary valid certificate.

Affected products

Apache Qpid Proton: 0.8.0, 0.9.0, 0.9.1, 0.10.0, 0.11.0, 0.11.1 (+4)

References

http://www.openwall.com/lists/oss-security/2016/07/15/3
http://www.securityfocus.com/bid/91788
http://www.securitytracker.com/id/1036316
https://lists.apache.org/thread.html/914424e4d798a340f523b6169aaf39b626971d9bb00fcdeb1d5d6c0d%40%3Ccommits.qpid.apache.org%3E
http://www.openwall.com/lists/oss-security/2016/07/15/3
http://www.securityfocus.com/bid/91788
http://www.securitytracker.com/id/1036316
https://lists.apache.org/thread.html/914424e4d798a340f523b6169aaf39b626971d9bb00fcdeb1d5d6c0d%40%3Ccommits.qpid.apache.org%3E

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