Vulnerability Description
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.
CVSS Score
8.1
HIGH
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Golang | Crypto | <= 2017-03-17 |
Related Weaknesses (CWE)
References
- http://www.securityfocus.com/bid/97481Third Party AdvisoryVDB Entry
- https://bridge.grumpy-troll.org/2017/04/golang-ssh-security/Third Party Advisory
- https://github.com/golang/crypto/commit/e4e2799dd7aab89f583e1d898300d96367750991PatchThird Party Advisory
- https://github.com/golang/go/issues/19767Third Party Advisory
- https://godoc.org/golang.org/x/crypto/sshVendor Advisory
- http://www.securityfocus.com/bid/97481Third Party AdvisoryVDB Entry
- https://bridge.grumpy-troll.org/2017/04/golang-ssh-security/Third Party Advisory
- https://github.com/golang/crypto/commit/e4e2799dd7aab89f583e1d898300d96367750991PatchThird Party Advisory
- https://github.com/golang/go/issues/19767Third Party Advisory
- https://godoc.org/golang.org/x/crypto/sshVendor Advisory
FAQ
What is CVE-2017-3204?
CVE-2017-3204 is a vulnerability with a CVSS score of 8.1 (HIGH). 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 v...
How severe is CVE-2017-3204?
CVE-2017-3204 has been rated HIGH with a CVSS base score of 8.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2017-3204?
Check the references section above for vendor advisories and patch information. Affected products include: Golang Crypto.