In Node.js including 6.x before 6.17.0, 8.x before 8.15.1, 10.x before 10.15.2, and 11.x before 11.10.1, an attacker can cause a Denial of Service (DoS) by establishing an HTTP or HTTPS connection in keep-alive mode and by sending headers very slowly. This keeps the connection and associated resources alive for a long period of time. Potential attacks are mitigated by the use of a load balancer or other proxy layer. This vulnerability is an extension of CVE-2018-12121, addressed in November and impacts all active Node.js release lines including 6.x before 6.17.0, 8.x before 8.15.1, 10.x before 10.15.2, and 11.x before 11.10.1.

References

• https://nvd.nist.gov/vuln/detail/CVE-2019-5737
• https://access.redhat.com/errata/RHSA-2019:1821
• https://security.gentoo.org/glsa/202003-48
• http://lists.opensuse.org/opensuse-security-announce/2019-03/msg00041.html
• http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00046.html
• http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00059.html
• https://nodejs.org/en/blog/vulnerability/february-2019-security-releases
• https://security.netapp.com/advisory/ntap-20190502-0008