Windows feature or flaw? Alexander Korznikov a researcher security δημοσίευσε ένα τρόπο που σας βοηθάει να αποκτήσετε το υψηλότερο επίπεδο πρόσβασης ενός δικτύου, χωρίς να χρειάζεται ο κωδικό πρόσβασης.
The researcher reported in a blog post that a privileged user, such as a local administrator with system privileges, can use the command line to hijack at a session of another logged-in user who has higher privileges.
Korznikov mentioned that his technique is not just about gaining access to one account with higher privileges, but can also be used by system administrators to gain access to accounts with lower privileges.
The researcher says:
“A bank employee has access to a billing system and their credentials to log in. One day, he has started using the pricing system and at the time of the break, he locked the position work of. The system administrator can then login to the employee's workplace. According to her policy banks, the administrator should not have access to the invoicing system, but with two built-in commands in Windows, the administrator can hijack the employee's account, which is still locked. Thus, the administrator can perform malicious actions on the billing system through the employee's account.”
All it takes is about half a minute, according to the PoC video published by the researcher.
https://www.youtube.com/watch?v=VytjV2kPwSg
Korznikov said he tested the bug on systems running Windows 7, Windows 10, windows server 2008 and Windows Server 2012 R2, και λειτουργεί σε κάθε υποστηριζόμενη έκδοση των Windows.
Korznikov did not report the matter to Microsoft.
"Everything is done with built-in commands. "Any administrator can emulate any logged-in user either locally with physical access or remotely via Remote Desktop," he said.
"Reporting to Microsoft could take six months to resolve the issue, and I wanted to let them all know as soon as possible."
A Microsoft spokesman said the alleged flaw "is not a security vulnerability as it requires local administrator privileges on the machine."
Feature or defect? The researcher himself has given as a title to his publication “0-day or Feature? Privilege Escalation / Session Hijacking All Windows versions. ” Whether it is or the usefulness of the PoC you attended will be judged by you.
However, if you think of the scenario with the bank described by the researcher, it may well be malicious actions without the consent of the account holder.