PT-2025-42420

This update for MozillaFirefox fixes the following issues: Update to Firefox Extended Support Release 140.3.1 ESR bsc1250452. - Improved reliability when HTTP/3 connections fail: Firefox no longer forces HTTP/2 during fallback, allowing the server to choose the protocol and preventing stalls on...

Security Bulletin: IBM Cloud Pak for Data is vulnerable to denial of service attacks due to http2 ( CVE-2023-44487 )

Summary Potential vulnerabilities in http2 package CVE-2023-44487 has been identified that may affect IBM Cloud Pak for Data. Vulnerability Details CVEID:CVE-2023-44487 DESCRIPTION: The HTTP/2 protocol allows a denial of service server resource consumption because request cancellation can reset...

RHEL 8 : Red Hat Product OCP Tools 4.13 OpenShift Jenkins (RHSA-2025:16460)

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2025:16460 advisory. Jenkins is a continuous integration server that monitors executions of repeated jobs, such as building a software project or jobs run by cron...

jetty: HTTP/2 (including DNS over HTTPS) contains a design flaw and is vulnerable to "MadeYouReset" DoS attack through HTTP/2 control frames

A flaw was found in Jetty where malformed client requests can trigger server-side stream resets without triggering abuse counters. This issue, referred to as the "MadeYouReset" attack, allows malicious clients to induce excessive server workload by repeatedly causing server-side stream aborts...

Important: Red Hat Security Advisory: Red Hat Product OCP Tools 4.18 Openshift Jenkins security update

An update for Openshift Jenkins is now available for Red Hat Product OCP Tools 4.18. 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...

OESA-2025-2222 skopeo security update

A command line utility that performs various operations on container images and image repositories Security Fixes: A malicious HTTP/2 client which rapidly creates requests and immediately resets them can cause excessive server resource consumption. While the total number of requests is bounded by...

OESA-2025-2223 skopeo security update

A command line utility that performs various operations on container images and image repositories Security Fixes: A malicious HTTP/2 client which rapidly creates requests and immediately resets them can cause excessive server resource consumption. While the total number of requests is bounded by...

OESA-2025-2224 skopeo security update

A command line utility that performs various operations on container images and image repositories Security Fixes: A malicious HTTP/2 client which rapidly creates requests and immediately resets them can cause excessive server resource consumption. While the total number of requests is bounded by...

Linux Distros Unpatched Vulnerability : CVE-2023-26964

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - An issue was discovered in hyper v0.13.7. h2-0.2.4 Stream stacking occurs when the H2 component processes HTTP2 RSTSTREAM frames. As a result, the memory and CP...

SUSE SLES15: tomcat10 / tomcat10-admin-webapps / tomcat10-doc / etc (SUSE-SU-2025:03006-1)

The remote SUSE Linux SLES15 / SLESSAP15 / openSUSE 15 host has packages installed that are affected by a vulnerability as referenced in the SUSE-SU-2025:03006-1 advisory. Updated to Tomcat 10.1.44: - CVE-2025-48989: Fixed 'MadeYouReset' DoS in HTTP/2 due to client triggered stream reset bsc12438...

Linux Distros Unpatched Vulnerability : CVE-2020-9494

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Apache Traffic Server 6.0.0 to 6.2.3, 7.0.0 to 7.1.10, and 8.0.0 to 8.0.7 is vulnerable to certain types of HTTP/2 HEADERS frames that can cause the server to...

SUSE CVE-2025-57804

h2 is a pure-Python implementation of a HTTP/2 protocol stack. Prior to version 4.3.0, an HTTP/2 request splitting vulnerability allows attackers to perform request smuggling attacks by injecting CRLF characters into headers. This occurs when servers downgrade HTTP/2 requests to HTTP/1.1 without...

CVE-2025-57804

h2 is a pure-Python implementation of a HTTP/2 protocol stack. Prior to version 4.3.0, an HTTP/2 request splitting vulnerability allows attackers to perform request smuggling attacks by injecting CRLF characters into headers. This occurs when servers downgrade HTTP/2 requests to HTTP/1.1 without...

CVE-2025-57804

h2 is a pure-Python implementation of a HTTP/2 protocol stack. Prior to version 4.3.0, an HTTP/2 request splitting vulnerability allows attackers to perform request smuggling attacks by injecting CRLF characters into headers. This occurs when servers downgrade HTTP/2 requests to HTTP/1.1 without...

PT-2025-36701

mitmproxy 12.1.1 and below embed python-hyper/h2 ≤ v4.2.0, which has a gap in its HTTP/2 header validation. This enables request smuggling attacks when mitmproxy is in a configuration where it translates HTTP/2 to HTTP/1. For example, this affects reverse proxies to http:// backends. It does not...

CVE-2025-57804: Improper Neutralization of CRLF Sequences

h2 is a pure-Python implementation of a HTTP/2 protocol stack. Prior to version 4.3.0, an HTTP/2 request splitting vulnerability allows attackers to perform request smuggling attacks by injecting CRLF characters into headers. This occurs when servers downgrade HTTP/2 requests to HTTP/1.1 without...

tomcat security update

1:10.1.36-1.2 - tomcat: Apache Tomcat DoS in multipart upload CVE-2025-48988 - tomcat: Apache Tomcat: Security constraint bypass for pre/post-resources CVE-2025-49125 - apache-commons-fileupload: Apache Commons FileUpload DoS via part headers CVE-2025-48976 - tomcat: http/2 'MadeYouReset' DoS...

tomcat9 security update

1:9.0.87-5.3 - Resolves: tomcat: http/2 'MadeYouReset' DoS attack through HTTP/2 control frames CVE-2025-48989 - Resolves: tomcat: Apache Commons FileUpload DOS via part headers CVE-2025-48976 - Resolves: tomcat: Dos in multipart upload CVE-2025-48988 - Resolves: tomcat: Security constraint bypas...

CVE-2025-5115

In Eclipse Jetty, versions =9.4.57, =10.0.25, =11.0.25, =12.0.21, =12.1.0.alpha2, an HTTP/2 client may trigger the server to send RSTSTREAM frames, for example by sending frames that are malformed or that should not be sent in a particular stream state, therefore forcing the server to consume...

Denial Of Service (DoS)

HTTP/2 implementations are vulnerable to Denial Of Service DoS. The vulnerability is due to incorrect accounting of client-triggered stream resets, which allows an attacker to rapidly open and reset streams while backend processing continues, causing an unbounded number of concurrent streams and...