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CVE-2017-3204

Date: April 4, 2017

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.

Language: Go

Severity Score

Related Resources (7)

https://github.com/golang/go/issues/19767
https://bridge.grumpy-troll.org/2017/04/golang-ssh-security/
https://godoc.org/golang.org/x/crypto/ssh
http://www.securityfocus.com/bid/97481
https://nvd.nist.gov/vuln/detail/CVE-2017-3204
https://github.com/golang/crypto/commit/e4e2799dd7aab89f583e1d898300d96367750991
https://www.mend.io/vulnerability-database/CVE-2017-3204

Severity Score

Weakness Type (CWE)

Insufficient Information

NVD-CWE-noinfo

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): HIGH
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): MEDIUM
Authentication (AU): NONE
Confidentiality (C): PARTIAL
Integrity (I): PARTIAL
Availability (A): PARTIAL
Additional information:

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