Snort rule update for Oct. 12, 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:

Shared object rules	Modified shared object rules	New rules	Modified rules
1	0	37	8

There were no changes made to the snort.conf in this release.

Microsoft Vulnerability CVE-2021-40443: A coding deficiency exists in Microsoft Windows Common Log File System driver 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 58303 through 58304.

Microsoft Vulnerability CVE-2021-40449: 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 58288 through 58289.

Microsoft Vulnerability CVE-2021-40450: 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 58310 through 58313.

Microsoft Vulnerability CVE-2021-40466: A coding deficiency exists in Microsoft Windows Common Log File System driver 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 58308 through 58309.

Microsoft Vulnerability CVE-2021-40467: A coding deficiency exists in Microsoft Windows Common Log File System driver 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 58305 through 58306.

Microsoft Vulnerability CVE-2021-40470: A coding deficiency exists in DirectX Graphics Kernel 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 58294 through 58295.

Microsoft Vulnerability CVE-2021-40487: A coding deficiency exists in Microsoft SharePoint that may lead to remote code execution.

Rules to detect attacks targeting these vulnerabilities are included in this release and are identified with GID 1, SIDs 58314 through 58319.

Microsoft Vulnerability CVE-2021-41357: 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 58286 through 58287.

Talos also has added and modified multiple rules in the malware-other, os-windows, policy-other 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.