Node.js HTTP/2 Server Denial of Service Vulnerability

CVE Number – CVE-2018-7161

A vulnerability in the HTTP/2 implementation feature of Node.js could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on a targeted system.

The vulnerability exists when the affected software interacts with an HTTP/2 server in such a way that triggers a cleanup bug where objects are used in native code after they are no longer available. An attacker could exploit this vulnerability by sending a request that submits malicious input to the targeted node server that provides an HTTP/2 server. An exploit could cause the node server to crash, resulting in a DoS condition.The Node.js Foundation has confirmed the vulnerability and released software updates.

To exploit this vulnerability, an attacker must send a request that submits malicious input to the targeted system, making exploitation more difficult in environments that restrict network access from untrusted sources.

Safeguards
  • Administrators are advised to apply the appropriate updates.

    Administrators are advised to allow only trusted users to have network access.

    Administrators are advised to run both firewall and antivirus applications to minimize the potential of inbound and outbound threats.

    Administrators may consider using IP-based access control lists (ACLs) to allow only trusted systems to access the affected systems.

    Administrators can help protect affected systems from external attacks by using a solid firewall strategy.

    Administrators are advised to monitor affected systems.

Vendor Announcements
Fixed Software
  • The Node.js Foundation has released software updates at the following link: Node.js 10.4.1





Duncan is a technology professional with over 20 years experience of working in various IT roles. He also has a wide range of other skills in radio, electronics and telecommunications.

Duncan Newell

Duncan is a technology professional with over 20 years experience of working in various IT roles. He also has a wide range of other skills in radio, electronics and telecommunications.

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