On Thursday, the U.S. government warned that 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 National Security Agency (NSA) issued an urgent advisory to call attention to a quintet of CVEs that a threat actor affiliated with Russia’s foreign intelligence service (SVR) had been actively exploited.
According to the NSA, the five vulnerabilities should be prioritized for patching alongside the newest 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 (advisory here)
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
The NSA said mitigation against these vulnerabilities is critically vital as Russian state-sponsored cyber actors constantly scan, target, and exploit U.S. and allied networks.
The NSA’s decision to pinpoint the five old security flaws suggests that many organizations are slow to apply the available fixes, especially during the pandemic when work-from-home expanded the need for VPN technologies.
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 Russian Foreign Intelligence Service (SVR) activities include targeting COVID-19 research facilities via WellMess malware and targeting networks through the VMware vulnerability disclosed by NSA,” the agency said.
The new advisory also includes additional tactics, techniques, and procedures the threat actor uses.
”[We] strongly encourage all cybersecurity stakeholders to check their networks for indicators of compromise related to all five vulnerabilities and the techniques detailed in the advisory and to implement associated mitigations urgently,” it added.
In a separate but related announcement, the U.S. announced the expulsion of 10 Russian diplomats and sanctions against nearly three dozen people and companies as it moved to hold the Kremlin accountable for interference in last year’s presidential election and the hacking of federal agencies.
