/*
* ja-elvis & ko-helvis - FreeBSD 351 & 42 ports package local root exploit
*
* vulnerable: versions prior to ja-elvis-184_1 and ko-helvis-18h2_1
*
* The above two packages contain a file recovery utility 'elvrec', installed
* suid root(4755) by default The utility is subject to a buffer overflow
* leading to root privileg ...