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sftp: fix nil check when using auth proxy

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An incorrect nil check was spotted while reviewing the code for
CVE-2024-45337.

The nil check failing has never happened as far as we know. The
consequences would be a nil pointer exception.
This commit is contained in:
Nick Craig-Wood 2024-12-13 11:59:40 +00:00
parent 96fe25cf0a
commit f9946b37f9
1 changed files with 1 additions and 1 deletions
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2
cmd/serve/sftp/server.go
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@ -65,7 +65,7 @@ func (s *server) getVFS(what string, sshConn *ssh.ServerConn) (VFS *vfs.VFS) {
if s.proxy == nil {
return s.vfs
}
if sshConn.Permissions == nil && sshConn.Permissions.Extensions == nil {
if sshConn.Permissions == nil || sshConn.Permissions.Extensions == nil {
fs.Infof(what, "SSH Permissions Extensions not found")
return nil
}