Snort Subscriber Rules Update 2021-05-11

[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-2021-26419:
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.


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

https://www.snort.org/advisories
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