One more was published today:

- Jetty - CVE-2025-5115

https://github.com/jetty/jetty.project/security/advisories/GHSA-mmxm-8w33-wc4h

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Jetty's Team Notes Impact A denial of service vulnerability similar to Rapid Reset, but where the client triggers a reset from the server by sending a malformed or invalid frame. In particular, this may be triggered by WINDOWUPDATE frames that are invalid (e.g. with delta==0 or when the delta makes the window exceed 2^31-1).

Patches Patch has been merged into 12.0.x mainline via #13449.

Workarounds No workarounds apart disabling HTTP/2. On Sat, Aug 16, 2025 at 11:30 AM Alan Coopersmith < alan.coopersmith () oracle com> wrote: On 8/13/25 11:27, Alan Coopersmith wrote: https://kb.cert.org/vuls/id/767506 was published today: HTTP/2 implementations are vulnerable to "MadeYouReset" DoS attack through HTTP/2 control frames Vulnerability Note VU#767506 Original Release Date: 2025-08-13 | Last Revised: 2025-08-13

Overview -------- A vulnerability has been discovered within many HTTP/2 implementations allowing for denial of service (DoS) attacks through HTTP/2 control frames. This vulnerability is colloquially known as "MadeYouReset" and is tracked as CVE-2025-8671. Some vendors have assigned a specific CVE to their products to describe the vulnerability, such as CVE-2025-48989, which is used to identify Apache Tomcat products affected by the vulnerability. OSS implementations that have responded (whether affected or not) include:

- Apache Tomcat - CVE-2025-48989 https://www.openwall.com/lists/oss-security/2025/08/13/2

- h2o - CVE-2025-8671 https://github.com/h2o/h2o/security/advisories/GHSA-mrjm-qq9m-9mjq

- hyper.rs h2 - CVE-2025-8671 https://seanmonstar.com/blog/hyper-http2-didnt-madeyoureset/

- ISC BIND - CVE-2025-8671 https://gitlab.isc.org/isc-projects/bind9/-/issues/5325

- lighttpd - CVE-2025-8671 https://www.lighttpd.net/2025/8/13/1.4.80/

- Netty - CVE-2025-55163 https://github.com/netty/netty/security/advisories/GHSA-prj3-ccx8-p6x4

- Varnish - CVE-2025-8671 https://varnish-cache.org/security/VSV00017.html

-- -Alan Coopersmith- alan.coopersmith () oracle com Oracle Solaris Engineering - https://blogs.oracle.com/solaris

[I've seen multiple news articles & blogs in the wake of the coordinated disclosure today, but no postings here yet, so lets start fixing that.]

Google, Cloudflare, AWS, and others released details today of a protocol-level issue in HTTP/2 being exploited in recent months for denial-of-service attacks:

https://cloud.google.com/blog/products/identity-security/how-it-works-the-novel-http2-rapid-reset-ddos-attack https://blog.cloudflare.com/technical-breakdown-http2-rapid-reset-ddos-attack/ https://aws.amazon.com/blogs/security/how-aws-protects-customers-from-ddos-events/

This attack works via the multiplexed streams feature of HTTP/2, in which the client repeatedly makes a request for a new stream, and then immediately sends a RSTSTREAM frame to cancel them, resulting in the server doing lots of extra work to set up and tear down the streams, while not hitting any server-side limit on a maximum number of active streams per connection.

CVE-2023-44487 was issued to track this issue across implementations: https://www.cve.org/CVERecord?id=CVE-2023-44487

A script to check for affected implemenations has been posted at: https://github.com/bcdannyboy/CVE-2023-44487

Information I've found so far on open source implementations (most via the current listings in the CVE) include:

- Apache httpd: https://chaos.social/@icing/111210915918780532

- caddy: https://github.com/caddyserver/caddy/issues/5877

- envoy: https://github.com/envoyproxy/envoy/pull/30055

- golang: https://github.com/golang/go/issues/63417 https://groups.google.com/g/golang-announce/c/iNNxDTCjZvo

- h2o: https://github.com/h2o/h2o/security/advisories/GHSA-2m7v-gc89-fjqf https://github.com/h2o/h2o/pull/3291

- haproxy: https://github.com/haproxy/haproxy/issues/2312

- hyper: https://seanmonstar.com/post/730794151136935936/hyper-http2-rapid-reset-unaffected

- jetty: https://github.com/eclipse/jetty.project/issues/10679 https://github.com/eclipse/jetty.project/releases/tag/jetty-12.0.2 https://github.com/eclipse/jetty.project/releases/tag/jetty-11.0.17 https://github.com/eclipse/jetty.project/releases/tag/jetty-10.0.17 https://github.com/eclipse/jetty.project/releases/tag/jetty-9.4.53.v20231009

- netty: https://github.com/netty/netty/commit/58f75f665aa81a8cbcf6ffa74820042a285c5e61

- nghttp2: https://github.com/nghttp2/nghttp2/pull/1961 https://github.com/nghttp2/nghttp2/releases/tag/v1.57.0

- nginx: https://www.nginx.com/blog/http-2-rapid-reset-attack-impacting-f5-nginx-products/ https://mailman.nginx.org/pipermail/nginx-devel/2023-October/S36Q5HBXR7CAIMPLLPRSSSYR4PCMWILK.html

- nodejs: https://github.com/nodejs/node/pull/50121

- proxygen: https://github.com/facebook/proxygen/pull/466

- swift-nio-http2: https://forums.swift.org/t/swift-nio-http2-security-update-cve-2023-44487-http-2-dos/67764

- tomcat: https://tomcat.apache.org/security-11.html#FixedinApacheTomcat11.0.0-M12 https://tomcat.apache.org/security-10.html#FixedinApacheTomcat10.1.14 https://tomcat.apache.org/security-9.html#FixedinApacheTomcat9.0.81 https://tomcat.apache.org/security-8.html#FixedinApacheTomcat8.5.94

-- -Alan Coopersmith- alan.coopersmith () oracle com Oracle Solaris Engineering - https://blogs.oracle.com/solaris

Jetty before 4.2.27, 5.1 before 5.1.12, 6.0 before 6.0.2, and 6.1 before 6.1.0pre3 generates predictable session identifiers using java.util.random, which makes it easier for remote attackers to guess a session identifier through brute force attacks, bypass authentication requirements, and possibly conduct cross-site request forgery attacks.

Directory traversal vulnerability in jetty 6.0.x (jetty6) beta16 allows remote attackers to read arbitrary files via a %2e%2e%5c (encoded ../) in the URL. NOTE: this might be the same issue as CVE-2005-3747.

jetty 6.0.x (jetty6) beta16 allows remote attackers to read arbitrary script source code via a capital P in the .jsp extension, and probably other mixed case manipulations.

HttpRequest.java in Jetty HTTP Server before 4.2.19 allows remote attackers to cause denial of service (memory usage and application crash) via HTTP requests with a large Content-Length.

Unspecified vulnerability in Jetty HTTP Server, as used in (1) IBM Trading Partner Interchange before 4.2.4, (2) CA Unicenter Web Services Distributed Management (WSDM) before 3.11, and possibly other products, allows remote attackers to read arbitrary files via a .. (dot dot) in the URL.

Cross-site scripting (XSS) vulnerability in Jetty JSP servlet engine allows remote attackers to insert arbitrary HTML or script via an HTTP request to a .jsp file whose name contains the malicious script and some encoded linefeed characters (%0a).

Directory traversal vulnerability in the CGIServlet for Jetty HTTP server before 4.1.0 allows remote attackers to execute arbitrary commands via ..\ (dot-dot backslash) sequences in an HTTP request to the cgi-bin directory.