Vulnerability Monitor

The vendors, products, and vulnerabilities you care about

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.

Published

2017-04-04T14:59:00.180

Last Modified

2025-04-20T01:37:25.860

Status

Deferred

Source

[email protected]

Severity

CVSSv3.1: 8.1 (HIGH)

CVSSv2 Vector

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

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

Exploitability Score

8.6

Impact Score

6.4

Weaknesses

Type: Secondary
CWE-310
Type: Primary
NVD-CWE-noinfo

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	golang	crypto	≤ 2017-03-17	Yes

References

http://www.securityfocus.com/bid/97481 Third Party Advisory, VDB Entry ([email protected])
https://bridge.grumpy-troll.org/2017/04/golang-ssh-security/ Third Party Advisory ([email protected])
https://github.com/golang/crypto/commit/e4e2799dd7aab89f583e1d898300d96367750991 Patch, Third Party Advisory ([email protected])
https://github.com/golang/go/issues/19767 Third Party Advisory ([email protected])
https://godoc.org/golang.org/x/crypto/ssh Vendor Advisory ([email protected])
http://www.securityfocus.com/bid/97481 Third Party Advisory, VDB Entry (af854a3a-2127-422b-91ae-364da2661108)
https://bridge.grumpy-troll.org/2017/04/golang-ssh-security/ Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://github.com/golang/crypto/commit/e4e2799dd7aab89f583e1d898300d96367750991 Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://github.com/golang/go/issues/19767 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://godoc.org/golang.org/x/crypto/ssh Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)