Cyber Risks · Cisco Talos

Threat Source newsletter (July 1, 2021)

Summary: Cisco warned this week that a cross-site scripting vulnerability in its Adaptive Security Appliance software, CVE-2020-3580, first disclosed in October, is being exploited in the wild after a proof-of-concept became publicly available. Separately, researchers found Netfilter, a malicious rootkit disguised as a legitimate DLL that Microsoft confirmed it signed, which connects to several China-based command and control sites once installed.

Why it matters: The exploited flaw sits in a perimeter appliance whose job is to block threats from entering corporate networks, and the signed rootkit shows a Microsoft-signed binary can still lead to China-based command and control infrastructure.

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Topics
OT / ICS & Critical Infrastructure
Mentions
CVE-2020-3580
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