Apache Tomcat: h2 DoS - Made You Reset
Improper Resource Shutdown or Release vulnerability in Apache Tomcat made Tomcat vulnerable to the made you reset attack. This issue affects Apache Tomcat: from 11.0.0 through 11.0.9, from 10.1.0 through 10.1.43 and from 9.0.0 through 9.0.107. Older, EOL versions may also be affected. Users are recommended to upgrade to one of versions 11.0.10, 10.1.44 or 9.0.108 which fix the issue.
02 / AFFECTED SOFTWARE
Affected packages
27 explicit affected versions
191 explicit affected versions
191 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
Improper Resource Shutdown or Release vulnerability in Apache Tomcat made Tomcat vulnerable to the made you reset attack. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.9, from 10.1.0-M1 through 10.1.43 and from 9.0.0.M1 through 9.0.107. Older, EOL versions may also be affected. Users are recommended to upgrade to one of versions 11.0.10, 10.1.44 or 9.0.108 which fix the issue.
Improper Resource Shutdown or Release vulnerability in Apache Tomcat made Tomcat vulnerable to the made you reset attack. This issue affects Apache Tomcat: from 11.0.0 through 11.0.9, from 10.1.0 through 10.1.43 and from 9.0.0 through 9.0.107. Older, EOL versions may also be affected. Users are recommended to upgrade to one of versions 11.0.10, 10.1.44 or 9.0.108 which fix the issue.
Improper Resource Shutdown or Release vulnerability in Apache Tomcat made Tomcat vulnerable to the made you reset attack. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.9, from 10.1.0-M1 through 10.1.43 and from 9.0.0.M1 through 9.0.107. Older, EOL versions may also be affected. Users are recommended to upgrade to one of versions 11.0.10, 10.1.44 or 9.0.108 which fix the issue.
05 / REFERENCES
Further evidence
- http://www.openwall.com/lists/oss-security/2025/08/13/2
- https://cert-portal.siemens.com/productcert/html/ssa-032379.html
- https://github.com/apache/tomcat
- https://github.com/apache/tomcat/commit/73c04a10395774bda71a0b37802cf983662ce255
- https://github.com/apache/tomcat/commit/f362c8eb3b8ec5b7f312f7f5610731c0fb299a06
- https://github.com/apache/tomcat/commit/f36b8a4eea4ce8a0bc035079e1d259d29f5eb7bf
- https://lists.apache.org/thread/9ydfg0xr0tchmglcprhxgwhj0hfwxlyf
- https://nvd.nist.gov/vuln/detail/CVE-2025-48989
- https://tomcat.apache.org/security-10.html
- https://tomcat.apache.org/security-11.html
- https://tomcat.apache.org/security-9.html
- https://www.kb.cert.org/vuls/id/767506
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/48xxx/CVE-2025-48989.json