CVE-2021-25122

2021-03-0100:00:00

ubuntu.com

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

5 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

AV:N/AC:L/Au:N/C:P/I:N/A:N

0.002 Low

EPSS

Percentile

59.3%

JSON

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.

Bugs

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

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

OSVersionArchitecturePackageVersionFilename
ubuntu14.04noarchtomcat6< anyUNKNOWN
ubuntu16.04noarchtomcat6< anyUNKNOWN
ubuntu18.04noarchtomcat7< anyUNKNOWN
ubuntu14.04noarchtomcat7< anyUNKNOWN
ubuntu16.04noarchtomcat7< anyUNKNOWN
ubuntu18.04noarchtomcat8< anyUNKNOWN
ubuntu18.04noarchtomcat9< 9.0.16-3ubuntu0.18.04.2UNKNOWN
ubuntu20.04noarchtomcat9< 9.0.31-1ubuntu0.2UNKNOWN
ubuntu22.04noarchtomcat9< anyUNKNOWN
ubuntu23.10noarchtomcat9< anyUNKNOWN

OS	Version	Architecture	Package	Version	Filename
ubuntu	14.04	noarch	tomcat6	< any	UNKNOWN
ubuntu	16.04	noarch	tomcat6	< any	UNKNOWN
ubuntu	18.04	noarch	tomcat7	< any	UNKNOWN
ubuntu	14.04	noarch	tomcat7	< any	UNKNOWN
ubuntu	16.04	noarch	tomcat7	< any	UNKNOWN
ubuntu	18.04	noarch	tomcat8	< any	UNKNOWN
ubuntu	18.04	noarch	tomcat9	< 9.0.16-3ubuntu0.18.04.2	UNKNOWN
ubuntu	20.04	noarch	tomcat9	< 9.0.31-1ubuntu0.2	UNKNOWN
ubuntu	22.04	noarch	tomcat9	< any	UNKNOWN
ubuntu	23.10	noarch	tomcat9	< any	UNKNOWN