Microsoft Response to Distributed Denial of Service (DDoS) Attacks against HTTP/2

Summary Beginning in September 2023, Microsoft was notified by industry partners about a newly identified Distributed Denial-of-Service DDoS attack technique being used in the wild targeting HTTP/2 protocol. This vulnerability CVE-2023-44487 impacts any internet exposed HTTP/2 endpoints. As an...

October 10, 2023—KB5031356 (OS Builds 19044.3570 and 19045.3570) - EXPIRED

None None...

CVE-2023-44487

creationtimestamp| type| source ---|---|--- 2023-10-10 05:00:00+00:00| seen| https://msrc.microsoft.com/blog/2023/10/microsoft-response-to-distributed-denial-of-service-ddos-attacks-against-http/2/ 2023-10-10 05:00:00+00:00| seen|...

UBUNTU-CVE-2023-44487

The HTTP/2 protocol allows a denial of service server resource consumption because request cancellation can reset many streams quickly, as exploited in the wild in August through October 2023...

CVE-2023-44487

The HTTP/2 protocol allows a denial of service server resource consumption because request cancellation can reset many streams quickly, as exploited in the wild in August through October 2023...

Vulnerabilities fixed in Microsoft Developer Tools

Microsoft has fixed vulnerabilities in several Developer Tools. A malicious party could exploit the vulnerabilities to cause a denial-of-service attack. Of the vulnerabilities with reference CVE-2023-44487, Microsoft has information that they are being exploited to a limited extent. HTTP/2:...

KB5031362: Windows 10 Version 1607 and Windows Server 2016 Security Update (October 2023)

The remote Windows host is missing security update 5031362. It is, therefore, affected by multiple vulnerabilities - The HTTP/2 protocol allows a denial of service server resource consumption because request cancellation can reset many streams quickly, as exploited in the wild in August through...

CVE-2023-44487

CVE-2023-44487 – HTTP/2 Rapid Reset DoS Root cause: HTTP/2 stream resets can cause servers to continue processing, leading to unbounded resource consumption and potential DoS when clients rapidly cancel streams. What’s affected: Various HTTP/2 implementations and deployments, including servers, p...

KB5031358: Windows 11 version 21H2 Security Update (October 2023)

The remote Windows host is missing security update 5031358. It is, therefore, affected by multiple vulnerabilities - The HTTP/2 protocol allows a denial of service server resource consumption because request cancellation can reset many streams quickly, as exploited in the wild in August through...

FreeBSD : h2o -- HTTP/2 Rapid Reset attack vulnerability (bf545001-b96d-42e4-9d2e-60fdee204a43)

The version of FreeBSD installed on the remote host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the bf545001-b96d-42e4-9d2e-60fdee204a43 advisory. - The HTTP/2 protocol allows a denial of service server resource consumption because request cancellati...

KLA61363 Multiple vulnerabilities in Apache Tomcat

Multiple vulnerabilities were found in Apache Tomcat. Malicious users can exploit these vulnerabilities to cause denial of service, obtain sensitive information, execute arbitrary code. Below is a complete list of vulnerabilities: 1. A denial of service vulnerability in HTTP/2 protocol can be...

KLA61362 Multiple vulnerabilities in Apache Tomcat

Multiple vulnerabilities were found in Apache Tomcat. Malicious users can exploit these vulnerabilities to execute arbitrary code, cause denial of service, obtain sensitive information. Below is a complete list of vulnerabilities: 1. Improper Input Validation vulnerability in HTTP trailer headers...

Ubuntu 22.04 LTS / 23.04 : .NET vulnerability (USN-6427-1)

The remote Ubuntu 22.04 LTS / 23.04 host has packages installed that are affected by a vulnerability as referenced in the USN-6427-1 advisory. It was discovered that the .NET Kestrel web server did not properly handle HTTP/2 requests. A remote attacker could possibly use this issue to cause a...

CVE-2023-44487

The HTTP/2 protocol allows a denial of service server resource consumption because request cancellation can reset many streams quickly, as exploited in the wild in August through October 2023...

Fixed in Apache Tomcat 9.0.81

Important: Request smuggling CVE-2023-45648 Tomcat did not correctly parse HTTP trailer headers. A specially crafted, invalid trailer header could cause Tomcat to treat a single request as multiple requests leading to the possibility of request smuggling when behind a reverse proxy. This was fixe...

(RHSA-2023:116467) Important: Red Hat OpenShift Enterprise security update

Red Hat OpenShift Container Platform is Red Hat's cloud computing Kubernetes application platform solution designed for on-premise or private cloud deployments. This advisory contains the extra low-latency container images for Red Hat OpenShift Container Platform 4.14. See the following advisory...

CVE-2023-44487 affecting package prometheus-adapter for versions less than 0.10.0-2

CVE-2023-44487 affecting package prometheus-adapter for versions less than 0.10.0-2. A patched version of the package is available...

CVE-2021-44487

CVE-2021-44487 affects YottaDB through r1.32 and V7.0-000. Root cause: missing NULL checks in ious_open (sr_unix/ious_open.c) can lead to NULL pointer dereference and application crash. Impact described as crash; no exploitation details or patch/remediation provided in the supplied documents.