Snort rule update for Aug. 10, 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
2	0	18	0

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

Talos's rule release:

Microsoft Vulnerability CVE-2021-26432: A coding deficiency exists in Microsoft Windows Services for NFS ONCRPC XDR Driver 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 58003.

Microsoft Vulnerability CVE-2021-34480: 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 57998 through 57999.

Microsoft Vulnerability CVE-2021-34535: A coding deficiency exists in Remote Desktop Client 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 57997.

Talos has added and modified multiple rules in the browser-chrome, browser-ie, malware-cnc, malware-other, os-linux and server-other 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.