ID

VAR-202310-0175

CVE

CVE-2023-44487

TITLE

Red Hat Security Advisory 2023-7325-01

DESCRIPTION

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. The following advisory data is extracted from: https://access.redhat.com/security/data/csaf/v2/advisories/2023/rhsa-2023_7325.json Red Hat officially shut down their mailing list notifications October 10, 2023. Due to this, Packet Storm has recreated the below data as a reference point to raise awareness. It must be noted that due to an inability to easily track revision updates without crawling Red Hat's archive, these advisories are single notifications and we strongly suggest that you visit the Red Hat provided links to ensure you have the latest information available if the subject matter listed pertains to your environment. - Packet Storm Staff ==================================================================== Red Hat Security Advisory Synopsis: Important: OpenShift Container Platform 4.13.23 packages and security update Advisory ID: RHSA-2023:7325-01 Product: Red Hat OpenShift Enterprise Advisory URL: https://access.redhat.com/errata/RHSA-2023:7325 Issue date: 2023-11-21 Revision: 01 CVE Names: CVE-2023-44487 ==================================================================== Summary: Red Hat OpenShift Container Platform release 4.13.23 is now available with updates to packages and images that fix several bugs and add enhancements. This release includes a security update for Red Hat OpenShift Container Platform 4.13. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. Description: 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 RPM packages for Red Hat OpenShift Container Platform 4.13.23. See the following advisory for the container images for this release: https://access.redhat.com/errata/RHSA-2023:7323 Security Fix(es): * HTTP/2: Multiple HTTP/2 enabled web servers are vulnerable to a DDoS attack (Rapid Reset Attack) (CVE-2023-44487) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section. All OpenShift Container Platform 4.13 users are advised to upgrade to these updated packages and images when they are available in the appropriate release channel. To check for available updates, use the OpenShift CLI (oc) or web console. Instructions for upgrading a cluster are available at https://docs.openshift.com/container-platform/4.13/updating/updating-cluster-cli.html Solution: https://docs.openshift.com/container-platform/4.13/release_notes/ocp-4-13-release-notes.html CVEs: CVE-2023-44487 References: https://access.redhat.com/security/updates/classification/#important https://access.redhat.com/security/vulnerabilities/RHSB-2023-003 https://bugzilla.redhat.com/show_bug.cgi?id=2242803 https://bugzilla.redhat.com/show_bug.cgi?id=2243296 . The purpose of this text-only errata is to inform you about the security issues fixed. See references for release notes. Description: This asynchronous patch is a security update zip for the JBoss EAP XP 4.0.0 runtime distribution for use with EAP 7.4.13. Description: nginx is a web and proxy server supporting HTTP and other protocols, with a focus on high concurrency, performance, and low memory usage. ========================================================================== Ubuntu Security Notice USN-6427-2 October 19, 2023 dotnet8 vulnerability ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 23.10 Summary: .NET could be made to crash if it received specially crafted network traffic. Software Description: - dotnet8: .NET CLI tools and runtime Details: USN-6427-1 fixed a vulnerability in .NET. This update provides the corresponding update for .NET 8. Original advisory details: 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 denial of service. Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 23.10: aspnetcore-runtime-8.0 8.0.0~rc2-0ubuntu1 dotnet-host-8.0 8.0.0~rc2-0ubuntu1 dotnet-hostfxr-8.0 8.0.0~rc2-0ubuntu1 dotnet-runtime-8.0 8.0.0~rc2-0ubuntu1 dotnet-sdk-8.0 8.0.100~rc2-0ubuntu1 dotnet8 8.0.100-8.0.0~rc2-0ubuntu1 In general, a standard system update will make all the necessary changes. Description: Varnish Cache is a high-performance HTTP accelerator. It stores web pages in memory so web servers don't have to create the same web page over and over again, giving the website a significant speed up. Description: Node.js is a software development platform for building fast and scalable network applications in the JavaScript programming language. Description: The httpd packages provide the Apache HTTP Server, a powerful, efficient, and extensible web server

AFFECTED PRODUCTS

CVSS

PROBLEMTYPE DATA

THREAT TYPE

remote

EXTERNAL IDS

REFERENCES