Vulnerability Database

328,409

Total vulnerabilities in the database

CVE-2019-9514

Some HTTP/2 implementations are vulnerable to a reset flood, potentially leading to a denial of service. The attacker opens a number of streams and sends an invalid request over each stream that should solicit a stream of RST_STREAM frames from the peer. Depending on how the peer queues the RST_STREAM frames, this can consume excess memory, CPU, or both.

CVSS v3:

  • Severity: High
  • Score: 7.5
  • AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS v2:

  • Severity: High
  • Score: 7.8
  • AV:N/AC:L/Au:N/C:N/I:N/A:C
Software From Fixed in
apple / swiftnio 1.0.0 1.4.0.x
apache / traffic_server 8.0.0 8.0.3.x
apache / traffic_server 7.0.0 7.1.6.x
apache / traffic_server 6.0.0 6.2.3.x
debian / debian_linux 10.0 10.0.x
canonical / ubuntu_linux 16.04 16.04.x
canonical / ubuntu_linux 18.04 18.04.x
canonical / ubuntu_linux 19.04 19.04.x
debian / debian_linux 9.0 9.0.x
synology / diskstation_manager 6.2 6.2.x
fedoraproject / fedora 29 29.x
fedoraproject / fedora 30 30.x
opensuse / leap 15.0 15.0.x
opensuse / leap 15.1 15.1.x
redhat / enterprise_linux_workstation 7.0 7.0.x
redhat / enterprise_linux_server 7.0 7.0.x
redhat / software_collections 1.0 1.0.x
redhat / openshift_container_platform 3.9 3.9.x
redhat / openshift_container_platform 3.11 3.11.x
redhat / openshift_container_platform 3.10 3.10.x
redhat / jboss_core_services 1.0 1.0.x
redhat / enterprise_linux 8.0 8.0.x
redhat / jboss_enterprise_application_platform 7.2.0 7.2.0.x
redhat / single_sign-on 7.3 7.3.x
redhat / developer_tools 1.0 1.0.x
redhat / openshift_container_platform 4.1 4.1.x
redhat / openshift_container_platform 4.2 4.2.x
redhat / quay 3.0.0 3.0.0.x
redhat / enterprise_linux_eus 8.1 8.1.x
redhat / openshift_service_mesh 1.0 1.0.x
redhat / openstack 14 14.x
redhat / jboss_enterprise_application_platform 7.3.0 7.3.0.x
oracle / graalvm 19.2.0 19.2.0.x
mcafee / web_gateway 7.7.2.0 7.7.2.24
mcafee / web_gateway 7.8.2.0 7.8.2.13
mcafee / web_gateway 8.1.0 8.2.0
f5 / big-ip_local_traffic_manager 14.1.0 14.1.2.1
f5 / big-ip_local_traffic_manager 14.0.0 14.0.1.1
f5 / big-ip_local_traffic_manager 13.1.0 13.1.3.2
f5 / big-ip_local_traffic_manager 15.0.0 15.0.1.1
f5 / big-ip_local_traffic_manager 12.1.0 12.1.5.1
f5 / big-ip_local_traffic_manager 11.6.1 11.6.5.1
nodejs / node.js 8.0.0 8.8.1.x
nodejs / node.js 10.0.0 10.12.0.x
nodejs / node.js 12.0.0 12.8.1
nodejs / node.js 10.13.0 10.16.3
nodejs / node.js 8.9.0 8.16.1
Go icon golang.org/x/net/http - 0.0.0-20190813141303-74dc4d7220e7
Go icon golang.org/x/net - 0.0.0-20190813141303-74dc4d7220e7

Frequently Asked Questions

A security vulnerability is a weakness in software, hardware, or configuration that can be exploited to compromise confidentiality, integrity, or availability. Many vulnerabilities are tracked as CVEs (Common Vulnerabilities and Exposures), which provide a standardized identifier so teams can coordinate patching, mitigation, and risk assessment across tools and vendors.

CVSS (Common Vulnerability Scoring System) estimates technical severity, but it doesn't automatically equal business risk. Prioritize using context like internet exposure, affected asset criticality, known exploitation (proof-of-concept or in-the-wild), and whether compensating controls exist. A "Medium" CVSS on an exposed, production system can be more urgent than a "Critical" on an isolated, non-production host.

A vulnerability is the underlying weakness. An exploit is the method or code used to take advantage of it. A zero-day is a vulnerability that is unknown to the vendor or has no publicly available fix when attackers begin using it. In practice, risk increases sharply when exploitation becomes reliable or widespread.

Recurring findings usually come from incomplete Asset Discovery, inconsistent patch management, inherited images, and configuration drift. In modern environments, you also need to watch the software supply chain: dependencies, containers, build pipelines, and third-party services can reintroduce the same weakness even after you patch a single host. Unknown or unmanaged assets (often called Shadow IT) are a common reason the same issues resurface.

Use a simple, repeatable triage model: focus first on externally exposed assets, high-value systems (identity, VPN, email, production), vulnerabilities with known exploits, and issues that enable remote code execution or privilege escalation. Then enforce patch SLAs and track progress using consistent metrics so remediation is steady, not reactive.

SynScan combines attack surface monitoring and continuous security auditing to keep your inventory current, flag high-impact vulnerabilities early, and help you turn raw findings into a practical remediation plan.