node, 114 bytes

Result

AC

Duration

1045ms

Code [DL]

[a,b]=(""+require('fs').readFileSync(i=0)).split(`
`);for(;i<a;)console.log(`*${(i++&&i<a?' ':'*').repeat(b-2)}*`)

stdin

10
23

stdout

***********************
*                     *
*                     *
*                     *
*                     *
*                     *
*                     *
*                     *
*                     *
***********************

stderr