The Department of Homeland Security (DHS) issued a warning on April 15, 2019, entitled “VPN Applications Insecurely Store Session Cookies” (Vulnerability Note VU#192371) stating that “[M]ultiple Virtual Private Network (VPN) applications store the authentication and/or session cookies insecurely in memory and/or log files.”

The affected products identified by DHS are:

  • Palo Alto Networks GlobalProtect Agent 4.1.0 for Windows and GlobalProtect Agent 4.1.10 and earlier for macOS0 (CVE-2019-1573)
  • Pulse Secure Connect Secure prior to 8.1R14, 8.2, 8.3R6, and 9.0R2
  • Cisco AnyConnect 4.7.x and prior

According to US-CERT, “[I]f an attacker has persistent access to a VPN user’s endpoint or exfiltrates the cookie using other methods, they can replay the session and bypass other authentication methods. An attacker would then have access to the same applications that the user does through their VPN session.”

A patch is available for the Palo Alto products, but as of April 15, 2019, US-CERT was unaware of a patch for the Cisco product.

If your organization is using any of these products, or if you believe that your organization is vulnerable, US-CERT suggests that you contact CERT/CC at cert@cert.org with the affected products, version numbers, patch information, and self-assigned CVE.

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Photo of Linn Foster Freedman Linn Foster Freedman

Linn Freedman practices in data privacy and security law, and complex litigation. She is a member of the Business Litigation Group and chair’s the firm’s Data Privacy and Security Team. She currently serves as general counsel to the Rhode Island Quality Institute. Linn focuses her practice on compliance with all state and federal privacy and security laws and regulations, as well as emergency data breach response and mitigation. She counsels clients on state and federal data privacy and security investigations and data breaches. Prior to joining the firm, Linn was a partner at Nixon Peabody, where she served as leader of the firm’s Privacy & Data Protection Group. She also served as assistant attorney general and deputy chief of the Civil Division of the Attorney General’s Office for the State of Rhode Island. She earned her J.D. from Loyola University School of Law and her B.A., with honors, in American Studies from Newcomb College of Tulane University. She is admitted to practice law in Massachusetts and Rhode Island. Read her full rc.com bio here.