Apache Tomcat: DoS via excessive h2 streams at connection start
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Fix
- Fixed in 11.0.9, 10.1.43, 9.0.107
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
- Exploitation: none
- Automatable: yes
- Technical impact: partial
Summary
Uncontrolled Resource Consumption vulnerability in Apache Tomcat if an HTTP/2 client did not acknowledge the initial settings frame that reduces the maximum permitted concurrent streams. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.8, from 10.1.0-M1 through 10.1.42, from 9.0.0.M1 through 9.0.106. The following versions were EOL at the time the CVE was created but are known to be affected: 8.5.0 through 8.5.100. Other EOL versions may also be affected. Users are recommended to upgrade to version 11.0.9, 10.1.43 or 9.0.107, which fix the issue.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: yes · Technical impact: partial
- Record last updated
Affected versions
- Apache Software Foundation Apache Tomcat
From 11.0.0-M1 · through 11.0.8; From 10.1.0-M1 · through 10.1.42; From 9.0.0.M1 · through 9.0.106; From 8.5.0 · through 8.5.100
- org.apache.tomcat:tomcat-coyoteMaven
From 11.0.0-M1 · fixed in 11.0.9
- org.apache.tomcat:tomcat-coyoteMaven
From 10.1.0-M1 · fixed in 10.1.43
- org.apache.tomcat:tomcat-coyoteMaven
From 9.0.0.M1 · fixed in 9.0.107
- org.apache.tomcat:tomcat-coyoteMaven
From 8.5.0 · through 8.5.100
- org.apache.tomcat.embed:tomcat-embed-coreMaven
From 8.5.0 · through 8.5.100
- org.apache.tomcat.embed:tomcat-embed-coreMaven
From 9.0.0.M1 · fixed in 9.0.107
- org.apache.tomcat.embed:tomcat-embed-coreMaven
From 10.1.0-M1 · fixed in 10.1.43
- org.apache.tomcat.embed:tomcat-embed-coreMaven
From 11.0.0-M1 · fixed in 11.0.9