golang.org/x/crypto/ssh Man-in-the-Middle attack
The Go SSH library (golang.org/x/crypto/ssh) by default does not verify host keys, facilitating man-in-the-middle attacks if ClientConfig.HostKeyCallback is not set. Default behavior changed in commit e4e2799 to require explicitly registering a hostkey verification mechanism.
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describes (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2017-3204US | high8.1 | — | ||
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 reg… | ||||
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references
External citations — patches, advisories, analysis.
- https://bridge.grumpy-troll.org/2017/04/golang-ssh-securityWEB
- https://github.com/golang/crypto/commit/e4e2799dd7aab89f583e1d898300d96367750991WEB
- https://github.com/golang/go/issues/19767WEB
- https://go.dev/cl/340830WEB
- https://go.dev/cl/38701WEB
- https://go.dev/issue/19767WEB
- https://go.googlesource.com/crypto/+/e4e2799dd7aab89f583e1d898300d96367750991WEB
- https://godoc.org/golang.org/x/crypto/sshWEB
scry
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