FBI said in a flash security alert that nation-state actors have breached the networks of a US municipal government and a US financial entity by exploiting a critical vulnerability affecting Pulse Secure VPN servers.
The US Cybersecurity and Infrastructure Security Agency (CISA) previously alerted organizations on January 10 to patch their Pulse Secure VPN servers against ongoing attacks trying to exploit the flaw tracked as CVE-2019-11510.
This bug enables unauthenticated remote attackers to send a specially crafted URIs to connect to vulnerable servers and read sensitive files containing user credentials. These can later be used to take control of an organizations’ systems and more.
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Source: Bleeping Computer