Vulnerability Details CVE-2017-3204
The Go SSH library (x/crypto/ssh) by default does not verify host keys, facilitating man-in-the-middle attacks. Default behavior changed in commit e4e2799 to require explicitly registering a hostkey verification mechanism.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.022
EPSS Ranking 83.5%
CVSS Severity
CVSS v3 Score 8.1
CVSS v2 Score 6.8
References
- http://www.securityfocus.com/bid/97481
- https://bridge.grumpy-troll.org/2017/04/golang-ssh-security/
- https://github.com/golang/crypto/commit/e4e2799dd7aab89f583e1d898300d96367750991
- https://github.com/golang/go/issues/19767
- https://godoc.org/golang.org/x/crypto/ssh
- http://www.securityfocus.com/bid/97481
- https://bridge.grumpy-troll.org/2017/04/golang-ssh-security/
- https://github.com/golang/crypto/commit/e4e2799dd7aab89f583e1d898300d96367750991
- https://github.com/golang/go/issues/19767
- https://godoc.org/golang.org/x/crypto/ssh
Products affected by CVE-2017-3204
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cpe:2.3:a:golang:crypto:-
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cpe:2.3:a:golang:crypto:2017-02-09
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cpe:2.3:a:golang:crypto:2017-03-02
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cpe:2.3:a:golang:crypto:2017-03-07
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cpe:2.3:a:golang:crypto:2017-03-17