CVE-2017-3204
high
CVSS v3
8.1
CVSS v2
6.8
VIR risk
8.1
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.
Predictions
Exploit likelihood
88%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2017-3204
Vendor advisory: cret@cert.org — https://godoc.org/golang.org/x/crypto/ssh
Vendor advisory: cret@cert.org — https://github.com/golang/crypto/commit/e4e2799dd7aab89f583e1d898300d96367750991
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| debian | bookworm | fixed | 1:0.0~git20170407.0.55a552f+REALLY.0.0~git20161012.0.5f31782-1 |
| debian | bullseye | fixed | 1:0.0~git20170407.0.55a552f+REALLY.0.0~git20161012.0.5f31782-1 |
| debian | forky | fixed | 1:0.0~git20170407.0.55a552f+REALLY.0.0~git20161012.0.5f31782-1 |
| debian | sid | fixed | 1:0.0~git20170407.0.55a552f+REALLY.0.0~git20161012.0.5f31782-1 |
| debian | trixie | fixed | 1:0.0~git20170407.0.55a552f+REALLY.0.0~git20161012.0.5f31782-1 |
Package impact
| Ecosystem | Package | Vulnerable | Fixed |
|---|---|---|---|
| Go | golang.org/x/crypto | <0.0.0-20170330155735-e4e2799dd7aa | 0.0.0-20170330155735-e4e2799dd7aa |
Application impact
| Vendor | Product | Versions | Fixed |
|---|---|---|---|
| golang | crypto | {"endIncluding":"2017-03-17"} | |
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
- https://nvd.nist.gov/vuln/detail/CVE-2017-3204
- https://bridge.grumpy-troll.org/2017/04/golang-ssh-security
- https://go.dev/cl/340830
- https://go.dev/cl/38701
- https://go.dev/issue/19767
- https://go.googlesource.com/crypto/+/e4e2799dd7aab89f583e1d898300d96367750991
- https://pkg.go.dev/vuln/GO-2020-0013
- https://web.archive.org/web/20170423080311/https://www.securityfocus.com/bid/97481
- https://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2017-3204
- https://security-tracker.debian.org/tracker/CVE-2017-3204
CWEs
CWE-310
Verify integrity in audit chain (admin only). AS-IS.