CVE-2020-11996

Aliases:GHSA-53hp-jpwq-2jgqBIT-tomcat-2020-11996
Advisory lineage Upstream: 0 Downstream: 15
Modified
Published: 26 Jun 2020, 16:27
Last modified:04 Aug 2024, 11:48

Vulnerability Summary

Overall Risk (default)
medium
39/100
CVSS Score
7.5 HIGH
v3.1 (nvd)
EPSS Score
45.12% HIGH
45% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

26 Jun 2020, 16:27
Published
Vulnerability first disclosed
04 Aug 2024, 11:48
Last Modified
Vulnerability information updated

Description

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 concurrent HTTP/2 connections, the server could become unresponsive.

CVSS Metrics

  • v3.1•HIGH•Score: 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  • v2.0•MEDIUM•Score: 5AV:N/AC:L/Au:N/C:N/I:N/A:P

EPSS Trends

Current EPSS score: 45.12%• Percentile: 98%

Affected Systems

  • apache•apache tomcat

    10.0.0-M1 to 10.0.0-M5 | 9.0.0.M1 to 9.0.35 | 8.5.0 to 8.5.55

  • Unknown•Tomcat

    ≥ 8.5.0, ≤ 8.5.55 | ≥ 9.0.0, ≤ 9.0.35 | 9.0.0:milestone1 | 9.0.0:milestone10 | 9.0.0:milestone11 | 9.0.0:milestone12 | 9.0.0:milestone13 | 9.0.0:milestone14 | 9.0.0:milestone15 | 9.0.0:milestone16 | 9.0.0:milestone17 | 9.0.0:milestone18 | 9.0.0:milestone19 | 9.0.0:milestone2 | 9.0.0:milestone20 | 9.0.0:milestone21 | 9.0.0:milestone22 | 9.0.0:milestone23 | 9.0.0:milestone24 | 9.0.0:milestone25 | 9.0.0:milestone26 | 9.0.0:milestone27 | 9.0.0:milestone3 | 9.0.0:milestone4 | 9.0.0:milestone5 | 9.0.0:milestone6 | 9.0.0:milestone7 | 9.0.0:milestone8 | 9.0.0:milestone9 | 10.0.0:milestone1 | 10.0.0:milestone2 | 10.0.0:milestone3 | 10.0.0:milestone4 | 10.0.0:milestone5

  • canonical•ubuntu_linux

    20.04

  • debian•debian_linux

    9.0 | 10.0

  • org.apache.tomcat•tomcat

    ≥ 10.0.0-M1, < 10.0.0-M5 | ≥ 9.0.0.M1, < 9.0.35 | ≥ 8.5.0, < 8.5.55

  • netapp•oncommand_system_manager

    3.0 | 3.1.3

  • opensuse•leap

    15.1 | 15.2

  • oracle•mysql_enterprise_monitor

    ≤ 8.0.21

  • oracle•siebel_ui_framework

    ≤ 20.12

  • oracle•workload_manager

    12.2.0.1 | 18c | 19c

References (49)