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Red Hat Security Advisory 2023-5802-01
Red Hat Security Advisory 2023-5802-01 - Migration Toolkit for Runtimes 1.2.1 ZIP artifacts. 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_5802.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: Migration Toolkit for Runtimes security updateAdvisory ID: RHSA-2023:5802-01Product: Migration Toolkit for RuntimesAdvisory URL: https://access.redhat.com/errata/RHSA-2023:5802Issue date: 2023-10-17Revision: 01CVE Names: CVE-2023-44487====================================================================Summary: Migration Toolkit for Runtimes 1.2.1 releaseRed 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:Migration Toolkit for Runtimes 1.2.1 ZIP artifactsSecurity 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/jbossnetwork/restricted/listSoftware.html?product=migration.toolkit.runtimes&downloadType=distributionshttps://access.redhat.com/security/vulnerabilities/RHSB-2023-003Related news
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swift-nio-http2 is vulnerable to a denial-of-service vulnerability in which a malicious client can create and then reset a large number of HTTP/2 streams in a short period of time. This causes swift-nio-http2 to commit to a large amount of expensive work which it then throws away, including creating entirely new `Channel`s to serve the traffic. This can easily overwhelm an `EventLoop` and prevent it from making forward progress. swift-nio-http2 1.28 contains a remediation for this issue that applies reset counter using a sliding window. This constrains the number of stream resets that may occur in a given window of time. Clients violating this limit will have their connections torn down. This allows clients to continue to cancel streams for legitimate reasons, while constraining malicious actors.
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.