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Red Hat Security Advisory 2023-5712-01
Red Hat Security Advisory 2023-5712-01 - An update for the nginx:1.20 module is now available for Red Hat Enterprise Linux 8. Issues addressed include a denial of service vulnerability.
The following data is constructed from data provided by Red Hat's json file at:https://access.redhat.com/security/data/csaf/v2/advisories/2023/rhsa-2023_5712.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: Moderate: nginx:1.20 security updateAdvisory ID: RHSA-2023:5712-01Product: Red Hat Enterprise LinuxAdvisory URL: https://access.redhat.com/errata/RHSA-2023:5712Issue date: 2023-10-16Revision: 01CVE Names: CVE-2023-44487====================================================================Summary: An update for the nginx:1.20 module is now available for Red Hat Enterprise Linux 8.Red Hat Product Security has rated this update as having a security impact of Moderate. 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:nginx is a web and proxy server supporting HTTP and other protocols, with a focus on high concurrency, performance, and low memory usage. 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/#moderatehttps://access.redhat.com/security/vulnerabilities/RHSB-2023-003Related news
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Debian Linux Security Advisory 5522-2 - The patch to address CVE-2023-44487 (Rapid Reset Attack) was incomplete and caused a regression when using asynchronous I/O (the default for NIO and NIO2). DATA frames must be included when calculating the HTTP/2 overhead count to ensure that connections are not prematurely terminated.
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
Microsoft today issued security updates for more than 100 newly-discovered vulnerabilities in its Windows operating system and related software, including four flaws that are already being exploited. In addition, Apple recently released emergency updates to quash a pair of zero-day bugs in iOS.
Ongoing Rapid Reset DDoS flood attacks exposed organizations need to patch CVE-2023-44487 immediately to head off crippling outages and business disruption.
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.