You can create a small chroot with a custom resolv.conf. Example (tested on Ubuntu 14.04 64-bit): mkdir -p root/lib/x86_64-linux-gnu root/lib64 root/etc c

You can create a small chroot with a custom resolv.conf. Example (tested on Ubuntu 14.04 64-bit): mkdir -p root/lib/x86_64-linux-gnu root/lib64 root/etc cp -a --parents /lib/x86_64-linux-gnu/lib{c,nss,resolv}* root cp /lib64/ld-linux-x86-64.so.2 root/lib64 cp CVE-2015-7547-client root echo 'nameserver 127.0.0.1' > root/etc/resolv.conf sudo chroot root ./CVE-2015-7547-client If it prints nothing it crashed. Try running with strace to be sure.