Microsoft leaked info on a security update for a 'wormable' pre-auth remote code execution vulnerability found in the Server Message Block 3.0 (SMBv3) network communication protocol that reportedly should have been disclosed as part of this month's Patch Tuesday.
The vulnerability is due to an error when the SMBv3 handles maliciously crafted compressed data packets and it allows remote, unauthenticated attackers that exploit it to execute arbitrary code within the context of the application.
Even though the vulnerability advisory was not published by Microsoft (no explanation for this was released by Redmond so far), a number of security vendors part of
Microsoft Active Protections Program who get early access to vulnerability information did release details on the security flaw tracked as
CVE-2020-0796.
... ...
...