Allocation of Resources Without Limits or Throttling Affecting golang.org/x/crypto/ssh package, versions <0.35.0
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- published26 Feb 2025
- disclosed26 Feb 2025
- creditYuichi Watanabe
Introduced: 26 Feb 2025
NewCVE-2025-22869 (opens in a new tab)How to fix?
Upgrade golang.org/x/crypto/ssh to version 0.35.0 or higher.
Overview
golang.org/x/crypto/ssh is a SSH client and server
Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling in handshakeTransport in handshake.go. An internal queue gets populated with received packets during the key exchange process, while waiting for the client to send a SSH_MSG_KEXINIT. An attacker can cause the server to become unresponsive to new connections by delaying or withholding this message, or by causing the queue to consume all available memory.