Headline
Red Hat Security Advisory 2023-7334-01
Red Hat Security Advisory 2023-7334-01 - An update for rh-varnish6-varnish is now available for Red Hat Software Collections. Issues addressed include a denial of service vulnerability.
The following advisory data is extracted from:https://access.redhat.com/security/data/csaf/v2/advisories/2023/rhsa-2023_7334.jsonRed 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 AdvisorySynopsis: Important: rh-varnish6-varnish security updateAdvisory ID: RHSA-2023:7334-01Product: Red Hat Software CollectionsAdvisory URL: https://access.redhat.com/errata/RHSA-2023:7334Issue date: 2023-11-16Revision: 01CVE Names: CVE-2023-44487====================================================================Summary: An update for rh-varnish6-varnish is now available for Red Hat Software Collections.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: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.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.Solution:https://access.redhat.com/articles/11258CVEs:CVE-2023-44487References:https://access.redhat.com/security/updates/classification/#importanthttps://access.redhat.com/security/vulnerabilities/RHSB-2023-003https://bugzilla.redhat.com/show_bug.cgi?id=2242803Related news
Red Hat Security Advisory 2024-6536-03 - Red Hat AMQ Streams 2.5.2 is now available from the Red Hat Customer Portal. Issues addressed include bypass, denial of service, information leakage, and memory leak vulnerabilities.
Red Hat Security Advisory 2024-1458-03 - Red Hat OpenShift Container Platform release 4.14.18 is now available with updates to packages and images that fix several bugs and add enhancements. Issues addressed include a denial of service vulnerability.
Red Hat Security Advisory 2024-0484-03 - Red Hat OpenShift Container Platform release 4.13.31 is now available with updates to packages and images that fix several bugs and add enhancements.
Red Hat Security Advisory 2023-7607-03 - Red Hat OpenShift Container Platform release 4.12.45 is now available with updates to packages and images that fix several bugs.
Red Hat Security Advisory 2023-7478-01 - Red Hat OpenShift Container Platform release 4.11.54 is now available with updates to packages and images that fix several bugs.
Red Hat Security Advisory 2023-6022-01 - An update for the varnish:6 module is now available for Red Hat Enterprise Linux 8.2 Advanced Update Support, Red Hat Enterprise Linux 8.2 Telecommunications Update Service, and Red Hat Enterprise Linux 8.2 Update Services for SAP Solutions. Issues addressed include a denial of service vulnerability.
Red Hat Security Advisory 2023-6021-01 - An update for the varnish:6 module is now available for Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support, Red Hat Enterprise Linux 8.4 Telecommunications Update Service, and Red Hat Enterprise Linux 8.4 Update Services for SAP Solutions. Issues addressed include a denial of service vulnerability.
Cloudflare on Thursday said it mitigated thousands of hyper-volumetric HTTP distributed denial-of-service (DDoS) attacks that exploited a recently disclosed flaw called HTTP/2 Rapid Reset, 89 of which exceeded 100 million requests per second (RPS). "The campaign contributed to an overall increase of 65% in HTTP DDoS attack traffic in Q3 compared to the previous quarter," the web infrastructure
Ubuntu Security Notice 6438-2 - USN-6438-1 fixed vulnerabilities in .Net. It was discovered that the fix for [CVE-2023-36799] was incomplete. This update fixes the problem. Kevin Jones discovered that .NET did not properly process certain X.509 certificates. An attacker could possibly use this issue to cause a denial of service. 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.
Red Hat Security Advisory 2023-5929-01 - An update for tomcat is now available for Red Hat Enterprise Linux 9. Issues addressed include a denial of service vulnerability.
Red Hat Security Advisory 2023-5840-01 - Node.js is a software development platform for building fast and scalable network applications in the JavaScript programming language. Issues addressed include a denial of service vulnerability.
Debian Linux Security Advisory 5522-3 - A regression was discovered in the Http2UpgradeHandler class of Tomcat 9 introduced by the patch to fix CVE-2023-44487 (Rapid Reset Attack). A wrong value for the overheadcount variable forced HTTP2 connections to close early.
Red Hat Security Advisory 2023-5769-01 - nghttp2 contains the Hypertext Transfer Protocol version 2 client, server, and proxy programs as well as a library implementing the HTTP/2 protocol in C. Issues addressed include a denial of service vulnerability.
By Deeba Ahmed Google, Cloudflare, and AWS Disclosed Digital History’s Largest Ever DDoS Attack- Courtesy HTTP/2 Zero-day. This is a post from HackRead.com Read the original post: Google, Cloudflare, and AWS Disclose Largest DDoS Attack in History
Summary 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 industry leader, Microsoft promptly opened an investigation and subsequently began working with industry partners for a coordinated disclosure and mitigation plan.