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MS Outlook security problem 2023 - critical

smuggler.ie · 2023-03-16 21:12:33

Mods , feel free to move to appropriate forum if needed Not certain if it was announced to general public/private users yet, it was for MS partners, so... here you go: An attacker who successfully exploited this vulnerability could access a user's Net-NTLMv2 hash which could be used as a basis of an NTLM Relay attack…

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16-03-2023 10:12pm

#1

smuggler.ie

Registered Users Posts: 4,083 ✭✭✭

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Mods , feel free to move to appropriate forum if needed

Not certain if it was announced to general public/private users yet, it was for MS partners, so... here you go:
An attacker who successfully exploited this vulnerability could access a user's Net-NTLMv2 hash which could be used as a basis of an NTLM Relay attack against another service to authenticate as the user.
External attackers could send specially crafted emails that will cause a connection from the victim to an external UNC location of attackers' control. This will leak the Net-NTLMv2 hash of the victim to the attacker who can then relay this to another service and authenticate as the victim.
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-23397
Users urged to update MS office

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