December 9, 2023

Russian APT operators are exploiting five known — and already patched — vulnerabilities in corporate VPN infrastructure products, insisting it is “critically important” to mitigate these issues immediately.

The five vulnerabilities should be prioritized for patching alongside the newest batch of Exchange Server updates released by Microsoft earlier this week.

Here are the five vulnerabilities that need immediate attention:

CVE-2018-13379 Fortinet FortiGate VPN

CVE-2019-9670 Synacor Zimbra Collaboration Suite

CVE-2019-11510 Pulse Secure Pulse Connect Secure VPN

CVE-2019-19781 Citrix Application Delivery Controller and Gateway

CVE-2020-4006 VMware Workspace ONE Access

“Mitigation against these vulnerabilities is critically important as U.S. and allied networks are constantly scanned, targeted, and exploited by Russian state-sponsored cyber actors,”.

The NSA’s decision to pinpoint the five old security flaws suggests that many organizations are slow to apply the available fixes.The advisory comes on the same day the U.S. government formally attributed the SolarWinds supply chain mega-hack to Russia’s SVP and announced expanded sanctions and the expulsion of diplomats.

In addition to compromising the SolarWinds Orion software supply chain, recent SVR activities include targeting COVID-19 research facilities via WellMess malware and targeting networks through the VMware vulnerability disclosed by NSA.

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