ssh-host-config eval password bug

Ian Kelling smallnow@gmail.com
Sun Jul 5 18:16:00 GMT 2009


In the ssh package there is a bug in /usr/bin/ssh-host-config where if you 
select a valid password spaces or punctuation that bash knows of, it will 
fail and you could possibly shoot yourself in the foot due to evaling your 
password. I don't know who is responsible, or what mailing list to post on, 
but here is a patch.

- Ian Kelling

--- ssh-host-config.old	2009-05-29 22:35:16.244777500 -0700
+++ ssh-host-config	2009-05-29 22:40:31.234257500 -0700
@@ -323,12 +323,12 @@

  	if [ -n "${csih_cygenv}" ]
  	then
-	  cygwin_env="-e CYGWIN=\"${csih_cygenv}\""
+	  cygwin_env=( -e "CYGWIN=${csih_cygenv}" )
  	fi
  	if [ -z "${password}" ]
  	then
-	  if eval cygrunsrv -I sshd -d \"CYGWIN sshd\" -p /usr/sbin/sshd \
-			    -a "-D" -y tcpip ${cygwin_env}
+	  if cygrunsrv -I sshd -d "CYGWIN sshd" -p /usr/sbin/sshd \
+			    -a "-D" -y tcpip "${cygwin_env[@]}"
  	  then
  	    echo
  	    csih_inform "The sshd service has been installed under the LocalSystem"
@@ -337,8 +337,8 @@
  	    csih_inform "will start automatically after the next reboot."
  	  fi
  	else
-	  if eval cygrunsrv -I sshd -d \"CYGWIN sshd\" -p /usr/sbin/sshd \
-			    -a "-D" -y tcpip ${cygwin_env} \
+	  if cygrunsrv -I sshd -d "CYGWIN sshd" -p /usr/sbin/sshd \
+			    -a "-D" -y tcpip "${cygwin_env[@]}" \
  			    -u "${run_service_as}" -w "${password}"
  	  then
  	    echo


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