ID

VAR-202310-0175

CVE

CVE-2023-44487

TITLE

Red Hat Security Advisory 2023-6048-01

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 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_6048.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: ACS 4.2 enhancement and security update Advisory ID: RHSA-2023:6048-01 Product: Red Hat Advanced Cluster Security for Kubernetes Advisory URL: https://access.redhat.com/errata/RHSA-2023:6048 Issue date: 2023-10-23 Revision: 01 CVE Names: CVE-2023-39325 ==================================================================== Summary: Updated images are now available for Red Hat Advanced Cluster Security. The updated image includes new features and bug fixes. 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: This release of RHACS 4.2.2 includes fixes for the following security vulnerabilities: Security Fix(es): * golang: net/http, x/net/http2: rapid stream resets can cause excessive work (CVE-2023-44487) (CVE-2023-39325) * 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. It contains the following bug fixes and changes: * Previously, Red Hat OpenShift Container Platform customers using the downloaded manifest bundle with automatic upgrades enabled found that Sensor did not automatically upgrade, and failed with a `PRE_FLIGHT_CHECKS_FAILED` error. This issue has been fixed. (ROX-19955) * RHACS 4.2.2 includes a new default policy called \"Rapid Reset: Denial of Service Vulnerability in HTTP/2 Protocol\". This policy alerts on deployments with images containing components that are susceptible to a Denial of Service (DoS) vulnerability for HTTP/2 servers, based on CVE-2023-44487 and CVE-2023-39325. This policy applies to the build or deploy life cycle stage. Solution: CVEs: CVE-2023-39325 References: https://access.redhat.com/security/updates/classification/#important https://access.redhat.com/documentation/en-us/red_hat_advanced_cluster_security_for_kubernetes/4.2/html/release_notes/release-notes-42 https://access.redhat.com/security/cve/CVE-2023-39325 https://access.redhat.com/security/cve/CVE-2023-44487 https://access.redhat.com/security/vulnerabilities/RHSB-2023-003 . -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 - ------------------------------------------------------------------------- Debian Security Advisory DSA-5570-1 security@debian.org https://www.debian.org/security/ Moritz Muehlenhoff December 01, 2023 https://www.debian.org/security/faq - ------------------------------------------------------------------------- Package : nghttp2 CVE ID : CVE-2023-44487 It was discovered that libnghttp2, a library implementing the HTTP/2 protocol, handled request cancellation incorrectly. This could result in denial of service. For the oldstable distribution (bullseye), this problem has been fixed in version 1.43.0-1+deb11u1. For the stable distribution (bookworm), this problem has been fixed in version 1.52.0-1+deb12u1. We recommend that you upgrade your nghttp2 packages. For the detailed security status of nghttp2 please refer to its security tracker page at: https://security-tracker.debian.org/tracker/nghttp2 Further information about Debian Security Advisories, how to apply these updates to your system and frequently asked questions can be found at: https://www.debian.org/security/ Mailing list: debian-security-announce@lists.debian.org -----BEGIN PGP SIGNATURE----- iQIzBAEBCgAdFiEEtuYvPRKsOElcDakFEMKTtsN8TjYFAmVqQcgACgkQEMKTtsN8 TjbEqA//QDCmDN5CLJGvcajpO5Ys2AbOXT+i7cTVhPDjFSnNs0CajiY/ay2qfYNX 2L5Bk5XPbFmLWD1QhvpMysXYFOJKxyqzhhTU23Ha2cQS4M5t2SHzkoKPyD+Vk6wg BF2TwwlZiSJTMcQqMcw2OAUAfwwaxPVIT0wB8VNY/I7HO3pvTKXSFl9Wb0Y2RzZT kL8ci804D57Uqi45dM391V4B3UfoQ/EK+bYhbu8qDfp3/gL7gclRy2+v+by1JwsN RUKM+nbb4eB0L7XM4rWmZrB4o0Tp5KblwNYRmUh7aCxqIuHRvwzRmQYoEB0KXJ7j Udv0/cUISbjkcIZ+lTIduhWRRvQxjo6M9rB0Tk6jFjTwXWRpWKPcYBYz1L8QKN+x lizyctsoT6TJR+IeJmbAfkY8hcTT1j/PZSn1udnRCodpXjUccn8cot4NlU6VWtzw X5hZCYGTlyeY3oKuPusES6bNsYqzJNp4ObU0xOTvES/ru8Zmiz/76Eufg3+oDo3S gYKVFcchgp0mk20owdWHTadQpIfQFoJkL2FWYWFhXuTGTe30R9bsMIbDddaD3cYs 6p7AiwYljhYYWqaVmRCAhiGerpun18NZhKUlV7ZMF8yQflrVddPqoVTVQEpWx6ZL cuJ2u/oag8DdQsfXrQvZWcVWdp77itr+ZeBhm7Xok0+jPDscFDo= =P2Nw -----END PGP SIGNATURE----- . Description: Node.js is a software development platform for building fast and scalable network applications in the JavaScript programming language. Description: .NET is a managed-software framework. It implements a subset of the .NET framework APIs and several new APIs, and it includes a CLR implementation. New versions of .NET that address a security vulnerability are now available. The updated versions are .NET 6.0 to SDK 6.0.123 and Runtime 6.0.23. The following packages have been upgraded to a later upstream version: rh-dotnet60-dotnet (6.0.123). Description: nginx is a web and proxy server supporting HTTP and other protocols, with a focus on high concurrency, performance, and low memory usage. 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 4.11.54. All OpenShift Container Platform 4.11 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

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REFERENCES