Allocation of Resources Without Limits or Throttling Affecting golang.org/x/crypto/ssh package, versions <0.35.0
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published26 Feb 2025
- disclosed26 Feb 2025
- creditYuichi Watanabe
Introduced: 26 Feb 2025
CVE-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.