high
7.5
CWE
200
Advisory Published
CVE Published
Updated

CVE-2021-25122: Apache Tomcat h2c request mix-up

First published: Mon Mar 01 2021(Updated: )

A flaw was found in Apache Tomcat. When responding to new h2c connection requests, Apache Tomcat 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. The highest threat from this vulnerability is to data confidentiality.

Credit: security@apache.org security@apache.org

Affected SoftwareAffected VersionHow to fix
redhat/jws5-ecj<0:4.12.0-3.redhat_2.2.el7
0:4.12.0-3.redhat_2.2.el7
redhat/jws5-tomcat<0:9.0.43-11.redhat_00011.1.el7
0:9.0.43-11.redhat_00011.1.el7
redhat/jws5-tomcat-native<0:1.2.26-3.redhat_3.el7
0:1.2.26-3.redhat_3.el7
redhat/jws5-tomcat-vault<0:1.1.8-2.Final_redhat_00003.1.el7
0:1.1.8-2.Final_redhat_00003.1.el7
redhat/jws5-ecj<0:4.12.0-3.redhat_2.2.el8
0:4.12.0-3.redhat_2.2.el8
redhat/jws5-tomcat<0:9.0.43-11.redhat_00011.1.el8
0:9.0.43-11.redhat_00011.1.el8
redhat/jws5-tomcat-native<0:1.2.26-3.redhat_3.el8
0:1.2.26-3.redhat_3.el8
redhat/jws5-tomcat-vault<0:1.1.8-2.Final_redhat_00003.1.el8
0:1.1.8-2.Final_redhat_00003.1.el8
redhat/tomcat<10.0.2
10.0.2
redhat/tomcat<9.0.43
9.0.43
redhat/tomcat<8.5.63
8.5.63
IBM IBM® Engineering Requirements Management DOORS<=9.7.2.7
IBM IBM® Engineering Requirements Management DOORS Web Access<=9.7.2.7
Apache Tomcat>=8.5.0<=8.5.61
Apache Tomcat>=9.0.0<=9.0.41
Apache Tomcat=9.0.0-milestone1
Apache Tomcat=9.0.0-milestone10
Apache Tomcat=9.0.0-milestone11
Apache Tomcat=9.0.0-milestone12
Apache Tomcat=9.0.0-milestone13
Apache Tomcat=9.0.0-milestone14
Apache Tomcat=9.0.0-milestone15
Apache Tomcat=9.0.0-milestone16
Apache Tomcat=9.0.0-milestone17
Apache Tomcat=9.0.0-milestone18
Apache Tomcat=9.0.0-milestone19
Apache Tomcat=9.0.0-milestone2
Apache Tomcat=9.0.0-milestone20
Apache Tomcat=9.0.0-milestone21
Apache Tomcat=9.0.0-milestone22
Apache Tomcat=9.0.0-milestone23
Apache Tomcat=9.0.0-milestone24
Apache Tomcat=9.0.0-milestone25
Apache Tomcat=9.0.0-milestone26
Apache Tomcat=9.0.0-milestone27
Apache Tomcat=9.0.0-milestone3
Apache Tomcat=9.0.0-milestone4
Apache Tomcat=9.0.0-milestone5
Apache Tomcat=10.0.0
Apache Tomcat=10.0.0-milestone1
Apache Tomcat=10.0.0-milestone10
Apache Tomcat=10.0.0-milestone2
Apache Tomcat=10.0.0-milestone3
Apache Tomcat=10.0.0-milestone4
Apache Tomcat=10.0.0-milestone5
Apache Tomcat=10.0.0-milestone6
Apache Tomcat=10.0.0-milestone7
Apache Tomcat=10.0.0-milestone8
Apache Tomcat=10.0.0-milestone9
Debian Debian Linux=9.0
Debian Debian Linux=10.0
Oracle Agile PLM=9.3.3
Oracle Agile PLM=9.3.6
Oracle Communications Cloud Native Core Policy=1.14.0
Oracle Communications Cloud Native Core Security Edge Protection Proxy=1.6.0
Oracle Communications Instant Messaging Server=10.0.1.5.0
Oracle Database=12.2.0.1
Oracle Database=19c
Oracle Database=21c
Oracle Graph Server And Client<21.3.0
Oracle Graph Server And Client=21.3.0
Oracle Instantis Enterprisetrack=17.1
Oracle Instantis Enterprisetrack=17.2
Oracle Instantis Enterprisetrack=17.3
Oracle Managed File Transfer=12.2.1.3.0
Oracle Managed File Transfer=12.2.1.4.0
Oracle Mysql Enterprise Monitor<=8.0.23
Oracle Siebel Ui Framework<=21.9
debian/tomcat9
9.0.43-2~deb11u10
9.0.70-2
9.0.95-1

Remedy

https://lists.apache.org/thread.html/rf6d5d57b114678d8898005faef31e9fd6d7c981fcc4ccfc3bc272fc9@%3Cdev.tomcat.apache.org%3E

Remedy

https://www.oracle.com//security-alerts/cpujul2021.html

Remedy

https://www.oracle.com/security-alerts/cpujan2022.html

Remedy

https://www.oracle.com/security-alerts/cpuoct2021.html

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Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Frequently Asked Questions

  • What is the severity of CVE-2021-25122?

    The severity of CVE-2021-25122 is high.

  • Which versions of Apache Tomcat are affected by CVE-2021-25122?

    Apache Tomcat versions 10.0.0-M1 to 10.0.0 and 9.0.0.M1 to 9.0.43 are affected by CVE-2021-25122.

  • How does CVE-2021-25122 affect Apache Tomcat?

    CVE-2021-25122 allows user A and user B to see the results of user A's request due to duplicate request headers and a limited amount of request body.

  • What is the remedy for CVE-2021-25122 in Apache Tomcat 10.0.2?

    The remedy for CVE-2021-25122 in Apache Tomcat 10.0.2 is to update to version 10.0.3.

  • Where can I find more information about CVE-2021-25122?

    You can find more information about CVE-2021-25122 at the following references: [link1], [link2], [link3].

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