Headline
Debian Security Advisory 5664-1
Debian Linux Security Advisory 5664-1 - Jetty 9 is a Java based web server and servlet engine. It was discovered that remote attackers may leave many HTTP/2 connections in ESTABLISHED state (not closed), TCP congested and idle. Eventually the server will stop accepting new connections from valid clients which can cause a denial of service.
-----BEGIN PGP SIGNED MESSAGE-----Hash: SHA512- -------------------------------------------------------------------------Debian Security Advisory DSA-5664-1 [email protected]://www.debian.org/security/ Markus KoschanyApril 17, 2024 https://www.debian.org/security/faq- -------------------------------------------------------------------------Package : jetty9CVE ID : CVE-2024-22201Jetty 9 is a Java based web server and servlet engine. It was discovered thatremote attackers may leave many HTTP/2 connections in ESTABLISHED state (notclosed), TCP congested and idle. Eventually the server will stop accepting newconnections from valid clients which can cause a denial of service.For the oldstable distribution (bullseye), this problem has been fixedin version 9.4.50-4+deb11u2.For the stable distribution (bookworm), this problem has been fixed inversion 9.4.50-4+deb12u3.We recommend that you upgrade your jetty9 packages.For the detailed security status of jetty9 please refer toits security tracker page at:https://security-tracker.debian.org/tracker/jetty9Further information about Debian Security Advisories, how to applythese updates to your system and frequently asked questions can befound at: https://www.debian.org/security/Mailing list: [email protected] PGP SIGNATURE-----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HK3G-----END PGP SIGNATURE-----Related news
Red Hat Security Advisory 2024-4597-03 - An update for OpenShift Jenkins is now available for Red Hat Product OCP Tools 4.15. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link in the References section. Issues addressed include bypass and traversal vulnerabilities.
### Impact If an HTTP/2 connection gets TCP congested, when an idle timeout occurs the HTTP/2 session is marked as closed, and then a GOAWAY frame is queued to be written. However it is not written because the connection is TCP congested. When another idle timeout period elapses, it is then supposed to hard close the connection, but it delegates to the HTTP/2 session which reports that it has already been closed so it does not attempt to hard close the connection. This leaves the connection in ESTABLISHED state (i.e. not closed), TCP congested, and idle. An attacker can cause many connections to end up in this state, and the server may run out of file descriptors, eventually causing the server to stop accepting new connections from valid clients. The client may also be impacted (if the server does not read causing a TCP congestion), but the issue is more severe for servers. ### Patches Patched versions: * 9.4.54 * 10.0.20 * 11.0.20 * 12.0.6 ### Workarounds Disable HTTP/2 and HTTP/...