Snort rule update for April 13, 2021 — Microsoft Patch Tuesday

 The latest SNORT® rule release from Cisco Talos has arrived. This new round of rules provides coverage for many of the vulnerabilities covered in Microsoft Patch Tuesday.

For more details on the vulnerabilities Microsoft disclosed this month, head to the Talos blog.
Here's a breakdown of this afternoon's rule release:
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Shared object rules Modified shared object rules New rules Modified rules
1 1 11 0

There were no changes made to the snort.conf in this release.
Talos's rule release:
Microsoft Vulnerability CVE-2021-28310: A coding deficiency exists in Microsoft Win32k that may lead to an escalation of privilege.

Rules to detect attacks targeting these vulnerabilities are included in this release and are identified with GID 1, SIDs 57403 through 57404.

Microsoft Vulnerability CVE-2021-28324: A coding deficiency exists in Microsoft SMB that may lead to information disclosure.

A rule to detect attacks targeting this vulnerability is included in this release and is identified with GID 1, SID 57411.

Microsoft Vulnerability CVE-2021-28325: A coding deficiency exists in Microsoft SMB that may lead to information disclosure.

A rule to detect attacks targeting this vulnerability is included in this release and is identified with GID 1, SID 57414.

Talos also has added and modified multiple rules in the malware-cnc, os-windows and server-webapp rule sets to provide coverage for emerging threats from these technologies.
You can subscribe to Talos' newest rule detection functionality for as low as $29 a year with a personal account. Be sure and see our business pricing as well here. Make sure and stay up to date to catch the most emerging threats.