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

Cvss 3 Severity Score

7.5

Score breakdown

Status

Package	Release	Status
tomcat6 Launchpad, Ubuntu, Debian	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
	precise	Ignored (end of ESM support, was needs-triage)
	trusty	Needs triage
	upstream	Needs triage
	xenial	Needs triage
tomcat7 Launchpad, Ubuntu, Debian	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
	precise	Does not exist
	trusty	Needs triage
	upstream	Needs triage
	xenial	Needs triage
	Patches: upstream: https://github.com/apache/tomcat/commit/f9f75c14678b68633f79030ddf4ff827f014cc84 upstream: https://github.com/apache/tomcat/commit/4c04982870d6e730c38e21e58fb653b7cf723784
tomcat8 Launchpad, Ubuntu, Debian	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
	precise	Does not exist
	trusty	Does not exist
	upstream	Needs triage
	xenial	Released (8.0.32-1ubuntu1.13)
	Patches: upstream: https://github.com/apache/tomcat/commit/12d715676038efbf9c728af10163f8277fc019d5
tomcat9 Launchpad, Ubuntu, Debian	bionic	Needs triage
	eoan	Ignored (reached end-of-life)
	focal	Released (9.0.31-1ubuntu0.1)
	groovy	Not vulnerable (9.0.37-3)
	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)
	precise	Does not exist
	trusty	Does not exist
	upstream	Needs triage
	xenial	Does not exist
	Patches: upstream: https://github.com/apache/tomcat/commit/40fa74c74822711ab878079d0a69f7357926723d

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

References

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