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SERIOUS SAM VULNERABILITY WINDOWS 10
SERIOUS SAM VULNERABILITY CODE
SERIOUS SAM VULNERABILITY DOWNLOAD

When using GPOs for implementation, make sure that the following UI Path is Enabled:Ĭomputer Configuration\Policies\Windows Settings\Security Settings\Local Policies\Security Options\Network access: Do not allow storage of passwords and credentials for network authenticationĬIS Hardening and Configuration Security Guide By implementing this rule, no hash will be stored in the SAM or in the Registry, therefore it is complete mitigation of this vulnerability.

Do not allow storage of passwords and credentials for network authentication – this rule is also recommended by the CIS in their benchmarks.

This will, again, solve only part of the problem since if an attacker will steal Admin credentials, you’ll be exposed to this vulnerability.

Restrict SAM files and Registry permissions – allow access only for Administrators.

Delete all the users from the built-in users’ group – this is a good place to start from, but won’t protect you in case that Administrator credentials will be stolen.

Your best option for mitigating SeriousSAM vulnerability is to implement hardening actions.ĭvir Goren, CTO at CalCom, offers 3 optional hardening actions for mitigation: By using it to intrude Domain users, attackers can access the network with elevated privileges. An attacker gaining ‘User’ access can use a tool such as Mimikatz to enter the Registry or the SAM, steal the hashes and convert them to passwords. This setting allocates ‘read’ permissions to the built-in user’s group that contains all local users.Īs a result, all built-in local users have permission to read both the SAM files and the Registry and can access the hashes stored in them.

SERIOUS SAM VULNERABILITY WINDOWS 10

The vulnerability sources in a default configuration set by Microsoft in Windows 10 and 11.

Mitigate without causing damage to production.

By leveraging this vulnerability, attackers can access hashed passwords that are stored in the Security Account Manager (SAM) and the Registry.

The vulnerability – SeriousSAM, allows attackers with user account access to perform a Pass-the-Hash (and potentially Silver Ticket) attack. This exploit uses VSC to extract the SAM, SYSTEM, and SECURITY hives even when in use, and saves them in current directory as HIVENAME-haxx, for use with whatever cracking tools, or whatever, you want.A new vulnerability in Windows 10 and Windows 11 was discovered a few days ago. What does the exploit do?Īllows you to read SAM data (sensitive) in Windows 10, as well as the SYSTEM and SECURITY hives. The permissions on key registry hives are set to allow all non-admin users to read the files by default, in most Windows 10 configurations.

Additions by on all supported versions of Windows 10, where System Protection is enabled (should be enabled by default in most configurations).

Discovered by PoC by powered by Porgs.

SERIOUS SAM VULNERABILITY DOWNLOAD

This is the direct download link for most recent version: Authors

SERIOUS SAM VULNERABILITY CODE

For example, this includes hashes in SAM, which can be used to execute code as SYSTEM. What is this?Īn zero day exploit for HiveNightmare, which allows you to retrieve all registry hives in Windows 10 as a non-administrator user. Exploit allowing you to read any registry hives as non-admin.