Tuesday, May 11, 2021

Snort rule update for May 11, 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 rulesModified shared object rulesNew rulesModified rules
241016

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

Talos's rule release:
Microsoft Vulnerability CVE-2021-26419: A coding deficiency exists in Microsoft Scripting Engine 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 57542 through 57543.

Microsoft Vulnerability CVE-2021-31166: A coding deficiency exists in HTTP Protocol Stack 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 57549 through 57550.

Microsoft Vulnerability CVE-2021-31170: A coding deficiency exists in Microsoft Graphics Component 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 57539 through 57540.

Microsoft Vulnerability CVE-2021-31181: A coding deficiency exists in Microsoft SharePoint that may lead to remote code execution.

A rule to detect attacks targeting this vulnerability is included in this release and is identified with GID 1, SID 57548.

Microsoft Vulnerability CVE-2021-31188: A coding deficiency exists in Microsoft Graphics Component 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 57544 through 57545.

Talos also has added and modified multiple rules in the browser-ie, file-image, file-other, malware-backdoor, 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.