| packages: |
| - module: golang.org/x/crypto |
| package: golang.org/x/crypto/ssh |
| symbols: |
| - ServerConfig.AddHostKey |
| derived_symbols: |
| - ServerConfig.AddHostKey |
| versions: |
| - fixed: 0.0.0-20220314234659-1baeb1ce4c0b |
| description: | |
| Attackers can cause a crash in SSH servers when the server has been |
| configured by passing a Signer to ServerConfig.AddHostKey such that |
| 1) the Signer passed to AddHostKey does not implement AlgorithmSigner, and |
| 2) the Signer passed to AddHostKey returns a key of type “ssh-rsa” from its |
| PublicKey method. |
| |
| Servers that only use Signer implementations provided by the ssh package are |
| unaffected. |
| cves: |
| - CVE-2022-27191 |
| ghsas: |
| - GHSA-8c26-wmh5-6g9v |
| links: |
| pr: https://go.dev/cl/392355 |
| commit: https://go.googlesource.com/crypto/+/1baeb1ce4c0b006eff0f294c47cb7617598dfb3d |
| context: |
| - https://groups.google.com/g/golang-announce |
| - https://groups.google.com/g/golang-announce/c/-cp44ypCT5s |
