CVSS 3.0
7.5 highCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HCVE-2019-10072
The fix for CVE-2019-0199 was incomplete and did not address HTTP/2 connection window exhaustion on write in Apache Tomcat versions 9.0.0.M1 to 9.0.19 and 8.5.0 to 8.5.40 . By not sending WINDOW_UPDATE messages for the connection window (stream 0) clients were able to cause server-side threads to block eventually leading to thread exhaustion and a DoS.
Severity
- EPSS
- 73% chance of exploitation in the next 30 days; higher than 99% of CVEs (scores of 2026-10-31)
- CWE
- CWE-667
- Published
- Modified
- Record from
- the NVD, synced
Affected
- apache:tomcat
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-q4hg-rmq2-52q9 | Maven | org.apache.tomcat.embed:tomcat-embed-core | >=9.0.0.M1 <9.0.20 | 9.0.20 |
| GHSA-q4hg-rmq2-52q9 | Maven | org.apache.tomcat.embed:tomcat-embed-core | >=8.5.0 <8.5.41 | 8.5.41 |
References
- http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00013.html
- http://www.securityfocus.com/bid/108874
- https://access.redhat.com/errata/RHSA-2019:3929
- https://access.redhat.com/errata/RHSA-2019:3931
- https://lists.apache.org/thread.html/df1a2c1b87c8a6c500ecdbbaf134c7f1491c8d79d98b48c6b9f0fa6a%40%3Cannounce.tomcat.apache.org%3E