Man-in-the-Middle (MitM) Affecting golang.org/x/crypto/ssh Open this link in a new tab package, versions


0.0
high
  • Attack Complexity

    High

  • Confidentiality

    High

  • Integrity

    High

  • Availability

    High

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications
  • snyk-id

    SNYK-GOLANG-GOLANGORGXCRYPTOSSH-50032

  • published

    30 Mar 2017

  • disclosed

    30 Mar 2017

  • credit

    Phil Pennock

Overview

Affected versions of github.com/golang/crypto/ssh are vulnerable to Man-in-the-middle (MitM) attacks. 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.

Remediation

Upgrade github.com/golang/crypto/ssh to commit e4e2799 or higher.