CVE-2019-0199: Apache Tomcat Denial of Service vulnerability
(updated )
The HTTP/2 implementation in Apache Tomcat 9.0.0.M1 to 9.0.14 and 8.5.0 to 8.5.37 accepted streams with excessive numbers of SETTINGS frames and also permitted clients to keep streams open without reading/writing request/response data. By keeping streams open for requests that utilised the Servlet API’s blocking I/O, clients were able to cause server-side threads to block eventually leading to thread exhaustion and a DoS.
References
- access.redhat.com/errata/RHSA-2019:3929
- access.redhat.com/errata/RHSA-2019:3931
- github.com/advisories/GHSA-qcxh-w3j9-58qr
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- nvd.nist.gov/vuln/detail/CVE-2019-0199
- seclists.org/bugtraq/2019/Dec/43
- security.netapp.com/advisory/ntap-20190419-0001
- support.f5.com/csp/article/K17321505
- web.archive.org/web/20200227030041/http://www.securityfocus.com/bid/107674
- www.debian.org/security/2019/dsa-4596
- www.oracle.com/security-alerts/cpuapr2020.html
- www.oracle.com/security-alerts/cpujan2020.html
- www.oracle.com/technetwork/security-advisory/cpujul2019-5072835.html
Code Behaviors & Features
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