CVE-2021-25122

Published: 1 March 2021

When responding to new h2c connection requests, Apache Tomcat versions 10.0.0-M1 to 10.0.0, 9.0.0.M1 to 9.0.41 and 8.5.0 to 8.5.61 could duplicate request headers and a limited amount of request body from one request to another meaning user A and user B could both see the results of user A's request.

Notes

Author	Note
leosilva	tomcat6 is out of support , marking tomcat6 for precise as ignored.
mdeslaur	tomcat 8.0 doesn't support HTTP/2, marking as not-affected

Priority

Cvss 3 Severity Score

7.5

Score breakdown

Status

Package	Release	Status
tomcat6 Launchpad, Ubuntu, Debian	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
	impish	Does not exist
	xenial	Needs triage
	upstream	Needs triage
	trusty	Needs triage
	bionic	Does not exist
	focal	Does not exist
	groovy	Does not exist
	hirsute	Does not exist
tomcat7 Launchpad, Ubuntu, Debian	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
	impish	Does not exist
	xenial	Needs triage
	upstream	Needs triage
	trusty	Needs triage
	bionic	Needs triage
	focal	Does not exist
	groovy	Does not exist
	hirsute	Does not exist
tomcat8 Launchpad, Ubuntu, Debian	focal	Does not exist
	groovy	Does not exist
	hirsute	Does not exist
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
	trusty	Does not exist
	upstream	Needs triage
	xenial	Not vulnerable (code not present)
	impish	Does not exist
	bionic	Needs triage
	Patches: upstream: https://github.com/apache/tomcat/commit/bb0e7c1e0d737a0de7d794572517bce0e91d30fa
tomcat9 Launchpad, Ubuntu, Debian	bionic	Released (9.0.16-3ubuntu0.18.04.2)
	focal	Released (9.0.31-1ubuntu0.2)
	groovy	Ignored (end of life)
	hirsute	Ignored (end of life)
	jammy	Needs triage
	lunar	Needs triage
	trusty	Does not exist
	upstream	Needs triage
	xenial	Does not exist
	kinetic	Ignored (end of life, was needs-triage)
	impish	Ignored (end of life)
	Patches: upstream: https://github.com/apache/tomcat/commit/d47c20a776e8919eaca8da9390a32bc8bf8210b1

Severity score breakdown

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

References

Bugs

https://bz.apache.org/bugzilla/show_bug.cgi?id=64830

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