CVE-2020-13934

HIGH

Apache Tomcat 8.5.1-8.5.56, 9.0.0.M5-9.0.36, 10.0.0-M1-10.0.0-M6 - Denial of Service via h2c Direct Connection

Title source: llm
STIX 2.1

Description

An h2c direct connection to Apache Tomcat 10.0.0-M1 to 10.0.0-M6, 9.0.0.M5 to 9.0.36 and 8.5.1 to 8.5.56 did not release the HTTP/1.1 processor after the upgrade to HTTP/2. If a sufficient number of such requests were made, an OutOfMemoryException could occur leading to a denial of service.

References (13)

Core 13
Core References
Third Party Advisory vendor-advisory x_refsource_debian
https://www.debian.org/security/2020/dsa-4727
Mailing List, Third Party Advisory mailing-list x_refsource_mlist
https://lists.debian.org/debian-lts-announce/2020/07/msg00017.html
Mailing List, Third Party Advisory vendor-advisory x_refsource_suse
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00084.html
Mailing List, Third Party Advisory vendor-advisory x_refsource_suse
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00088.html
Patch, Third Party Advisory x_refsource_misc
https://www.oracle.com/security-alerts/cpuoct2020.html
Third Party Advisory x_refsource_confirm
https://security.netapp.com/advisory/ntap-20200724-0003/
Third Party Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/4596-1/
Patch, Third Party Advisory x_refsource_misc
https://www.oracle.com/security-alerts/cpujan2021.html
Patch, Third Party Advisory x_refsource_misc
https://www.oracle.com/security-alerts/cpuApr2021.html
Patch, Third Party Advisory x_refsource_misc
https://www.oracle.com//security-alerts/cpujul2021.html
Patch, Third Party Advisory x_refsource_misc
https://www.oracle.com/security-alerts/cpujan2022.html

Scores

CVSS v3 7.5
EPSS 0.2338
EPSS Percentile 96.0%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Details

CWE
CWE-401 CWE-476
Status published
Products (23)
apache/tomcat 9.0.0 milestone10 (23 CPE variants)
apache/tomcat 10.0.0 milestone1 (6 CPE variants)
apache/tomcat 8.5.1 - 8.5.56
canonical/ubuntu_linux 20.04
debian/debian_linux 9.0
debian/debian_linux 10.0
netapp/oncommand_system_manager 3.0.0 - 3.1.3
opensuse/leap 15.1
opensuse/leap 15.2
oracle/agile_engineering_data_management 6.2.1.0
... and 13 more
Published Jul 14, 2020
Tracked Since Feb 18, 2026