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CVE-2020-13935

Published: 14 July 2020

The payload length in a WebSocket frame was not correctly validated in Apache Tomcat 10.0.0-M1 to 10.0.0-M6, 9.0.0.M1 to 9.0.36, 8.5.0 to 8.5.56 and 7.0.27 to 7.0.104. Invalid payload lengths could trigger an infinite loop. Multiple requests with invalid payload lengths could lead to a denial of service.

Priority

Medium

Cvss 3 Severity Score

7.5

Score breakdown

Status

Package Release Status
tomcat9
Launchpad, Ubuntu, Debian
focal
Released (9.0.31-1ubuntu0.1)
groovy Not vulnerable
(9.0.37-3)
lunar Not vulnerable
(9.0.37-3)
bionic Needs triage

eoan Ignored
(end of life)
hirsute Not vulnerable
(9.0.37-3)
impish Not vulnerable
(9.0.37-3)
jammy Not vulnerable
(9.0.37-3)
kinetic Not vulnerable
(9.0.37-3)
trusty Does not exist

upstream Needs triage

xenial Does not exist

mantic Not vulnerable
(9.0.37-3)
Patches:



upstream: https://github.com/apache/tomcat/commit/40fa74c74822711ab878079d0a69f7357926723d
tomcat6
Launchpad, Ubuntu, Debian
lunar Does not exist

bionic Does not exist

eoan Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

impish Does not exist

jammy Does not exist

kinetic Does not exist

trusty Needs triage

upstream Needs triage

xenial Needs triage

mantic Does not exist

tomcat7
Launchpad, Ubuntu, Debian
lunar Does not exist

bionic Needs triage

eoan Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

impish Does not exist

jammy Does not exist

kinetic Does not exist

trusty Needs triage

upstream Needs triage

xenial Needs triage

mantic Does not exist

Patches:
upstream: https://github.com/apache/tomcat/commit/f9f75c14678b68633f79030ddf4ff827f014cc84
upstream: https://github.com/apache/tomcat/commit/4c04982870d6e730c38e21e58fb653b7cf723784


tomcat8
Launchpad, Ubuntu, Debian
lunar Does not exist

bionic Needs triage

eoan Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

impish Does not exist

jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream Needs triage

xenial
Released (8.0.32-1ubuntu1.13)
mantic Does not exist

Patches:


upstream: https://github.com/apache/tomcat/commit/12d715676038efbf9c728af10163f8277fc019d5

Severity score breakdown

Parameter Value
Base score 7.5
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H