In some cases, Service Pack 4 for Windows NT 4.0 can allow access to network shares using a blank password, through a problem with a null NT hash value.
Exploitability Analysis: Network
A vulnerability exploitable with network access means the vulnerable software is bound to
the network stack and the attacker does not require local network access or local access.
Such a vulnerability is often termed “remotely exploitable”. An example of a network
attack is an RPC buffer overflow.
Exploitability Complexity: Low
Specialized access conditions or extenuating circumstances do not exist. The following are examples:
The affected product typically requires access to a wide range of systems and users, possibly anonymous an untrusted (e.g., Internet-facing web or mail server).
The affected configuration is default or ubiquitous. The attack can be performed manually and requires little skill or additional information gathering.
The 'race condition' is a lazy one (i.e., it is technically a race but easily winnable).
Authentication is not required to access and exploit the vulnerability.
Confidentiality Impact: Partial
There is considerable informational disclosure. Access to some system files is
possible, but the attacker does not have control over what is obtained, or the scope of
the loss is constrained. An example is a vulnerability that divulges only certain tables
in a database.
Integrity Impact: Partial
Modification of some system files or information is possible, but the attacker does not
have control over what can be modified, or the scope of what the attacker can affect is
limited. For example, system or application files may be overwritten or modified, but
either the attacker has no control over which files are affected or the attacker can
modify files within only a limited context or scope.
Availability Impact: Partial
There is reduced performance or interruptions in resource availability. An example is
a network-based flood attack that permits a limited number of successful connections
to an Internet service.