CVE-2023-46589: Apache Tomcat: HTTP request smuggling via malformed trailer headers

Published Nov 28, 2023
·
Updated

Affected versions:

- Apache Tomcat 11.0.0-M1 through 11.0.0-M10 - Apache Tomcat 10.1.0-M1 through 10.1.15 - Apache Tomcat 9.0.0-M1 through 9.0.82 - Apache Tomcat 8.5.0 through 8.5.95

Description:

Improper Input Validation vulnerability in Apache Tomcat.Tomcat from 11.0.0-M1 through 11.0.0-M10, from 10.1.0-M1 through 10.1.15, from 9.0.0-M1 through 9.0.82 and from 8.5.0 through 8.5.95 did not correctly parse HTTP trailer headers. A trailer header that exceeded the header size limit could cause Tomcat to treat a single request as multiple requests leading to the possibility of request smuggling when behind a reverse proxy.

Users are recommended to upgrade to version 11.0.0-M11 onwards, 10.1.16 onwards, 9.0.83 onwards or 8.5.96 onwards, which fix the issue.

Credit:

Norihito Aimoto (OSSTech Corporation) (finder)

References:

https://lists.apache.org/thread/0rqq6ktozqc42ro8hhxdmmdjm1k1tpxr http://www.openwall.com/lists/oss-security/2023/11/28/2

Other sources

Improper Input Validation vulnerability in Apache Tomcat. Tomcat from 11.0.0-M1 through 11.0.0-M10, from 10.1.0-M1 through 10.1.15, from 9.0.0-M1 through 9.0.82, and from 8.5.0 through 8.5.95 did not correctly parse HTTP trailer headers. A trailer header that exceeded the header size limit could cause Tomcat to treat a single request as multiple requests leading to the possibility of request smuggling when behind a reverse proxy.

Users are recommended to upgrade to version 11.0.0-M11 onwards, 10.1.16 onwards, 9.0.83 onwards or 8.5.96 onwards, which fix the issue.

— GitHub

Improper Input Validation vulnerability in Apache Tomcat.Tomcat from 11.0.0-M1 through 11.0.0-M10, from 10.1.0-M1 through 10.1.15, from 9.0.0-M1 through 9.0.82 and from 8.5.0 through 8.5.95 did not correctly parse HTTP trailer headers. A trailer header that exceeded the header size limit could cause Tomcat to treat a single request as multiple requests leading to the possibility of request smuggling when behind a reverse proxy.

Older, EOL versions may also be affected.

Users are recommended to upgrade to version 11.0.0-M11 onwards, 10.1.16 onwards, 9.0.83 onwards or 8.5.96 onwards, which fix the issue.

— MITRE

Affected Software

25 affected componentsFixes available
maven/org.apache.tomcat.embed:tomcat-embed-core>=8.5.0<8.5.96
8.5.96
maven/org.apache.tomcat.embed:tomcat-embed-core>=9.0.0-M1<9.0.83
9.0.83
maven/org.apache.tomcat.embed:tomcat-embed-core>=10.1.0-M1<10.1.16
10.1.16
maven/org.apache.tomcat.embed:tomcat-embed-core>=11.0.0-M1<11.0.0-M11
11.0.0-M11
maven/org.apache.tomcat:tomcat-catalina>=8.5.0<8.5.96
8.5.96
maven/org.apache.tomcat:tomcat-catalina>=9.0.0-M1<9.0.83
9.0.83
maven/org.apache.tomcat:tomcat-catalina>=10.1.0-M1<10.1.16
10.1.16
maven/org.apache.tomcat:tomcat-catalina>=11.0.0-M1<11.0.0-M11
11.0.0-M11
debian/tomcat10
10.1.6-1+deb12u210.1.30-1
debian/tomcat9
9.0.43-2~deb11u109.0.70-2
Apache Tomcat>=8.5.0<8.5.96
Apache Tomcat>=9.0.0<9.0.83
Apache Tomcat>=10.1.0<10.1.16
Apache Tomcat=11.0.0-milestone1
Apache Tomcat=11.0.0-milestone10
Apache Tomcat=11.0.0-milestone2
Apache Tomcat=11.0.0-milestone3
Apache Tomcat=11.0.0-milestone4
Apache Tomcat=11.0.0-milestone5
Apache Tomcat=11.0.0-milestone6
Apache Tomcat=11.0.0-milestone7
Apache Tomcat=11.0.0-milestone8
Apache Tomcat=11.0.0-milestone9
redhat/tomcat<9.0.83
9.0.83
IBM API Connect V12 OnPrem<=All

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade maven/org.apache.tomcat.embed:tomcat-embed-core to a version that resolves this vulnerability.

    Fixed in 8.5.96
  2. Upgrade

    Upgrade maven/org.apache.tomcat.embed:tomcat-embed-core to a version that resolves this vulnerability.

    Fixed in 9.0.83
  3. Upgrade

    Upgrade maven/org.apache.tomcat.embed:tomcat-embed-core to a version that resolves this vulnerability.

    Fixed in 10.1.16
  4. Upgrade

    Upgrade maven/org.apache.tomcat.embed:tomcat-embed-core to a version that resolves this vulnerability.

    Fixed in 11.0.0-M11
  5. Upgrade

    Upgrade maven/org.apache.tomcat:tomcat-catalina to a version that resolves this vulnerability.

    Fixed in 8.5.96
  6. Upgrade

    Upgrade maven/org.apache.tomcat:tomcat-catalina to a version that resolves this vulnerability.

    Fixed in 9.0.83
  7. Upgrade

    Upgrade maven/org.apache.tomcat:tomcat-catalina to a version that resolves this vulnerability.

    Fixed in 10.1.16
  8. Upgrade

    Upgrade maven/org.apache.tomcat:tomcat-catalina to a version that resolves this vulnerability.

    Fixed in 11.0.0-M11
  9. Upgrade

    Upgrade debian/tomcat10 to a version that resolves this vulnerability.

    Fixed in 10.1.6-1+deb12u2Fixed in 10.1.30-1
  10. Upgrade

    Upgrade debian/tomcat9 to a version that resolves this vulnerability.

    Fixed in 9.0.43-2~deb11u10Fixed in 9.0.70-2
  11. Upgrade

    Upgrade redhat/tomcat to a version that resolves this vulnerability.

    Fixed in 9.0.83
  12. Upgrade

    Upgrade Apache Tomcat to a version that resolves this vulnerability.

    Fixed in 11.0.0-M11 onwards
  13. Upgrade

    Upgrade Apache Tomcat to a version that resolves this vulnerability.

    Fixed in 10.1.16 onwards
  14. Upgrade

    Upgrade Apache Tomcat to a version that resolves this vulnerability.

    Fixed in 9.0.83 onwards
  15. Upgrade

    Upgrade Apache Tomcat to a version that resolves this vulnerability.

    Fixed in 8.5.96 onwards

Event History

Nov 28, 2023
CVE Published
via MITRE·03:31 PM
Data Sourced
via MITRE·03:31 PM
DescriptionWeakness
Data Sourced
via NVD·04:15 PM
DescriptionSeverityWeaknessAffected Software
Advisory Published
via GitHub·06:30 PM
Nov 29, 2023
Data Sourced
via Red Hat·08:23 AM
DescriptionSeverityAffected Software
Sep 25, 2024
Data Sourced
via Launchpad·03:05 PM
Description
Sep 29, 2024
Data Sourced
via Ubuntu·03:05 PM
RemedyDescriptionSeverityAffected Software
Jul 7, 2026
Data Sourced
via IBM·12:00 AM
DescriptionAffected Software

Parent advisories

This vulnerability appears in the following advisories.

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Frequently Asked Questions

1

What is CVE-2023-46589?

CVE-2023-46589 is an Improper Input Validation vulnerability in Apache Tomcat that allows for HTTP request smuggling via malformed trailer headers.

2

How does CVE-2023-46589 affect Apache Tomcat?

CVE-2023-46589 affects Apache Tomcat versions 8.5.0 through 8.5.95, 9.0.0-M1 through 9.0.82, 10.1.0-M1 through 10.1.15, and 11.0.0-M1 through 11.0.0-M10.

3

What is the remedy for CVE-2023-46589 in Apache Tomcat version 8.5.96?

The remedy for CVE-2023-46589 in Apache Tomcat version 8.5.96 is to update to that specific version or a later version.

4

What is the remedy for CVE-2023-46589 in Apache Tomcat version 9.0.83?

The remedy for CVE-2023-46589 in Apache Tomcat version 9.0.83 is to update to that specific version or a later version.

5

What is the remedy for CVE-2023-46589 in Apache Tomcat version 10.1.16?

The remedy for CVE-2023-46589 in Apache Tomcat version 10.1.16 is to update to that specific version or a later version.

6

What is the remedy for CVE-2023-46589 in Apache Tomcat version 11.0.0-M11?

The remedy for CVE-2023-46589 in Apache Tomcat version 11.0.0-M11 is to update to that specific version or a later version.

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