Which means that ought to an attacker acquire entry to this account, they now have native admin on all computer systems managed by way of SCCM and may then use that entry to dump credentials and discover different accounts.
In a single occasion, penetration testers gained entry to a daily person’s SharePoint, who in flip had learn entry to the PXE boot media utilized by Configuration Supervisor. That is used for booting a pc from a location over the community as a way to remotely deploy an working system.
The PXE boot media was not password protected and included a certificates that may very well be used to request the community entry account. That in flip account allowed the testers to extract area administrator accounts for 2 separate domains.
Furthermore, when working programs are deployed by way of PXE by Configuration Supervisor, a process executes that routinely joins that pc to a website. That is achieved by a so-called “process sequence area be part of account” which creates the corresponding pc object in Lively Listing and routinely turns into its proprietor. The problem is that the credentials for this account are accessible by any PXE consumer.
“Subsequently, if OSD [operating system deployment] is used to affix many computer systems (workstations or servers) to the area, the area be part of account can have possession over all of them,” the researchers mentioned. “If a server is promoted to area controller, or granted different Tier Zero roles, the area be part of account serves as a direct path to these belongings.”
One other frequent misuse is enrolling area controllers as shoppers in Configuration Supervisor to allow them to be remotely managed. This may sound intuitive, but it surely’s a giant safety threat as a result of if the Configuration Supervisor web site (central server) is compromised, attackers acquire distant code execution on the area controllers by way of functions, scripts and bundle deployments.
