An update for varnish is now available for openEuler-24.03-LTS-SP2 Security Advisory openeuler-security@openeuler.org openEuler security committee openEuler-SA-2025-2185 Final 1.0 1.0 2025-09-05 Initial 2025-09-05 2025-09-05 openEuler SA Tool V1.0 2025-09-05 varnish security update An update for varnish is now available for openEuler-24.03-LTS-SP2 This is Varnish Cache, a web application accelerator also known as a caching HTTP reverse proxy. You install it in front of any server that speaks HTTP and configure it to cache the contents. Varnish Cache is really, really fast. It typically speeds up delivery with a factor of 300 - 1000x, depending on your architecture. Security Fix(es): A mismatch caused by client-triggered server-sent stream resets between HTTP/2 specifications and the internal architectures of some HTTP/2 implementations may result in excessive server resource consumption leading to denial-of-service (DoS). By opening streams and then rapidly triggering the server to reset them—using malformed frames or flow control errors—an attacker can exploit incorrect stream accounting. Streams reset by the server are considered closed at the protocol level, even though backend processing continues. This allows a client to cause the server to handle an unbounded number of concurrent streams on a single connection. This CVE will be updated as affected product details are released.(CVE-2025-8671) An update for varnish is now available for openEuler-24.03-LTS-SP2. openEuler Security has rated this update as having a security impact of high. A Common Vunlnerability Scoring System(CVSS)base score,which gives a detailed severity rating, is available for each vulnerability from the CVElink(s) in the References section. High varnish https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2025-2185 https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2025-8671 https://nvd.nist.gov/vuln/detail/CVE-2025-8671 openEuler-24.03-LTS-SP2 varnish-7.4.3-4.oe2403sp2.aarch64.rpm varnish-debuginfo-7.4.3-4.oe2403sp2.aarch64.rpm varnish-debugsource-7.4.3-4.oe2403sp2.aarch64.rpm varnish-devel-7.4.3-4.oe2403sp2.aarch64.rpm varnish-7.4.3-4.oe2403sp2.src.rpm varnish-7.4.3-4.oe2403sp2.x86_64.rpm varnish-debuginfo-7.4.3-4.oe2403sp2.x86_64.rpm varnish-debugsource-7.4.3-4.oe2403sp2.x86_64.rpm varnish-devel-7.4.3-4.oe2403sp2.x86_64.rpm varnish-help-7.4.3-4.oe2403sp2.noarch.rpm A mismatch caused by client-triggered server-sent stream resets between HTTP/2 specifications and the internal architectures of some HTTP/2 implementations may result in excessive server resource consumption leading to denial-of-service (DoS). By opening streams and then rapidly triggering the server to reset them—using malformed frames or flow control errors—an attacker can exploit incorrect stream accounting. Streams reset by the server are considered closed at the protocol level, even though backend processing continues. This allows a client to cause the server to handle an unbounded number of concurrent streams on a single connection. This CVE will be updated as affected product details are released. 2025-09-05 CVE-2025-8671 openEuler-24.03-LTS-SP2 High 7.5 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H varnish security update 2025-09-05 https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2025-2185