Vulnerability in Apache Tomcat
CVE-2020-11996
A specially crafted sequence of HTTP/2 requests sent to Apache Tomcat 10.0.0-M1 to 10.0.0-M5, 9.0.0.M1 to 9.0.35 and 8.5.0 to 8.5.55 could trigger high CPU usage for several seconds. If a sufficient number of such requests were made on con…
EPSS: 0.267 (97.8th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Apache Tomcat — versions 10.0.0-M1 to 10.0.0-M5, 9.0.0.M1 to 9.0.35, 8.5.0 to 8.5.55
- Apache Tomcat — versions 9.0.0, 10.0.0
- Netapp Oncommand_system_manager — versions 3.0, 3.1.3
- Oracle Mysql_enterprise_monitor
- Oracle Siebel_ui_framework
- Oracle Workload_manager — versions 12.2.0.1, 18c, 19c
- Canonical Ubuntu_linux — versions 20.04
- Debian Debian_linux — versions 9.0, 10.0
- Opensuse Leap — versions 15.1, 15.2
Public proof-of-concept exploits
References
- security@apache.org (x_refsource_CONFIRM, Mailing List, Vendor Advisory)
- security@apache.org (mailing-list, x_refsource_MLIST)
- security@apache.org (mailing-list, x_refsource_MLIST)
- security@apache.org (mailing-list, x_refsource_MLIST)
- security@apache.org (mailing-list, x_refsource_MLIST)
- security@apache.org (mailing-list, x_refsource_MLIST)
- security@apache.org (mailing-list, x_refsource_MLIST)
- security@apache.org (mailing-list, x_refsource_MLIST)
- security@apache.org (mailing-list, x_refsource_MLIST)
- security@apache.org (mailing-list, x_refsource_MLIST)
Frequently asked questions
- What is CVE-2020-11996?
- CVE-2020-11996 is a high-severity vulnerability in Apache Tomcat. CVSS score: 7.5/10. Published 2020-06-26.
- How severe is CVE-2020-11996?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2020-11996 known to be exploited?
- 15 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.