Upstream information

CVE-2025-8671 at MITRE

Description

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.

SUSE information

Overall state of this security issue: Resolved

This issue is currently rated as having important severity.

CVSS v3 Scores
  CNA (CISA-ADP) SUSE
Base Score 7.5 7.5
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector Network Network
Attack Complexity Low Low
Privileges Required None None
User Interaction None None
Scope Unchanged Unchanged
Confidentiality Impact None None
Integrity Impact None None
Availability Impact High High
CVSSv3 Version 3.1 3.1
CVSS v4 Scores
  SUSE
Base Score 8.7
Vector CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Attack Vector Network
Attack Complexity Low
Attack Requirements None
Privileges Required None
User Interaction None
Vulnerable System Confidentiality Impact None
Vulnerable System Integrity Impact None
Vulnerable System Availability Impact High
Subsequent System Confidentiality Impact None
Subsequent System Integrity Impact None
Subsequent System Availability Impact None
CVSSv4 Version 4.0
SUSE Bugzilla entries: 1243888 [NEW], 1243895 [NEW]

SUSE Security Advisories:

List of released packages

Product(s) Fixed package version(s) References
openSUSE Tumbleweed
  • lighttpd >= 1.4.80-1.1
  • lighttpd-mod_authn_dbi >= 1.4.80-1.1
  • lighttpd-mod_authn_gssapi >= 1.4.80-1.1
  • lighttpd-mod_authn_ldap >= 1.4.80-1.1
  • lighttpd-mod_authn_pam >= 1.4.80-1.1
  • lighttpd-mod_authn_sasl >= 1.4.80-1.1
  • lighttpd-mod_deflate >= 1.4.80-1.1
  • lighttpd-mod_gnutls >= 1.4.80-1.1
  • lighttpd-mod_magnet >= 1.4.80-1.1
  • lighttpd-mod_maxminddb >= 1.4.80-1.1
  • lighttpd-mod_mbedtls >= 1.4.80-1.1
  • lighttpd-mod_nss >= 1.4.80-1.1
  • lighttpd-mod_openssl >= 1.4.80-1.1
  • lighttpd-mod_rrdtool >= 1.4.80-1.1
  • lighttpd-mod_vhostdb_dbi >= 1.4.80-1.1
  • lighttpd-mod_vhostdb_ldap >= 1.4.80-1.1
  • lighttpd-mod_vhostdb_mysql >= 1.4.80-1.1
  • lighttpd-mod_vhostdb_pgsql >= 1.4.80-1.1
  • lighttpd-mod_webdav >= 1.4.80-1.1
 Patchnames:
openSUSE-Tumbleweed-2025-15448

Status of this issue by product and package

Please note that this evaluation state might be work in progress, incomplete or outdated. Also information for service packs in the LTSS phase is only included for issues meeting the LTSS criteria. If in doubt, feel free to contact us for clarification. The updates are grouped by state of their lifecycle. SUSE product lifecycles are documented on the lifecycle page.

Product(s) Source package State
Products under general support and receiving all security fixes.
SUSE Linux Enterprise High Performance Computing 15 SP6 tomcat11 Released
SUSE Linux Enterprise High Performance Computing 15 SP7 tomcat11 Released
SUSE Linux Enterprise Module for Web and Scripting 15 SP6 tomcat11 Released
SUSE Linux Enterprise Module for Web and Scripting 15 SP7 tomcat11 Released
SUSE Linux Enterprise Server 15 SP6 tomcat11 Released
SUSE Linux Enterprise Server 15 SP7 tomcat11 Released
SUSE Linux Enterprise Server for SAP Applications 15 SP6 tomcat11 Released
SUSE Linux Enterprise Server for SAP Applications 15 SP7 tomcat11 Released
openSUSE Leap 15.6 tomcat11 Released
Products under Long Term Service Pack support and receiving important and critical security fixes.
SUSE Linux Enterprise High Availability Extension 12 SP5 lighttpd Not affected
SUSE Linux Enterprise Server for SAP Applications 12 SP5 lighttpd Not affected
Products past their end of life and not receiving proactive updates anymore.
SUSE Linux Enterprise High Availability Extension 12 lighttpd Not affected
SUSE Linux Enterprise High Availability Extension 12 SP1 lighttpd Not affected
SUSE Linux Enterprise High Availability Extension 12 SP2 lighttpd Not affected
SUSE Linux Enterprise High Availability Extension 12 SP3 lighttpd Not affected
SUSE Linux Enterprise High Availability Extension 12 SP4 lighttpd Not affected
SUSE Linux Enterprise Server for SAP Applications 12 lighttpd Not affected

SUSE Timeline for this CVE

CVE page created: Sat May 31 19:00:13 2025
CVE page last modified: Wed Aug 27 20:25:19 2025