An attacker is able to exploit features of the target that should be
reserved for privileged users or administrators but are exposed to use by
lower or non-privileged accounts. Access to sensitive information and
functionality must be controlled to ensure that only authorized users are
able to access these resources. If access control mechanisms are absent or
misconfigured, a user may be able to access resources that are intended only
for higher level users. An attacker may be able to exploit this to utilize a
less trusted account to gain information and perform activities reserved for
more trusted accounts. This attack differs from privilege escalation and
other privilege stealing attacks in that the attacker never actually
escalates their privileges but instead is able to use a lesser degree of
privilege to access resources that should be (but are not) reserved for
higher privilege accounts. Likewise, the attacker does not exploit trust or
subvert systems - all control functionality is working as configured but the
configuration does not adequately protect sensitive resources at an
appropriate level.
Attack Prerequisites
The target must have mis-configured their access control mechanisms such
that sensitive information, which should only be accessible to more trusted
users, remains accessible to less trusted users.
The attacker must have access to the target, albeit with an account that
is less privileged than would be appropriate for the targeted
resources.
Resources Required
No special resources are required for this attack beyond the ability to access
the target.
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