Snort Subscriber Rules Update 2021-06-08

[Research <research () sourcefire com>]

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Talos Snort Subscriber Rules Update

Synopsis:
Talos is aware of vulnerabilities affecting products from Microsoft
Corporation.

Details:
Microsoft Vulnerability CVE-2021-31199:
A coding deficiency exists in Microsoft Enhanced Cryptographic Provider
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 57724 through 57725.

Microsoft Vulnerability CVE-2021-31201:
A coding deficiency exists in Microsoft Enhanced Cryptographic Provider
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 57730 through 57731.

Microsoft Vulnerability CVE-2021-31952:
A coding deficiency exists in Microsoft Windows Kernel-Mode 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 57722 through 57723.

Microsoft Vulnerability CVE-2021-31954:
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 57734 through 57735.

Microsoft Vulnerability CVE-2021-31955:
A coding deficiency exists in Microsoft Windows Kernel that may lead to
information disclosure.

Rules to detect attacks targeting these vulnerabilities are included in
this release and are identified with GID 1, SIDs 57726 through 57727.

Microsoft Vulnerability CVE-2021-31956:
A coding deficiency exists in Microsoft Windows NTFS 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 57732 through 57733.

Microsoft Vulnerability CVE-2021-31959:
A coding deficiency exists in Scripting Engine that may lead to remote
code execution.

Previously released rules will detect attacks targeting these
vulnerabilities and have been updated with the appropriate reference
information. They are also included in this release and are identified
with GID 1, SIDs 49388 through 49389.

Microsoft Vulnerability CVE-2021-33739:
A coding deficiency exists in Microsoft DWM Core Library 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 57736 through 57737.

Talos also has added and modified multiple rules in the browser-ie,
file-other, malware-backdoor and os-windows rule sets to provide
coverage for emerging threats from these technologies.


For a complete list of new and modified rules please see:

https://www.snort.org/advisories
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