Vulnerability · Published Oct 10, 2023 · Assigned by apache
CVE-2023-45648Apache Tomcat: Trailer header parsing too lenient
Medium 5.3
In plain English
A medium-severity improper input validation in Apache Tomcat from Apache Software Foundation. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 5.9% (higher than 93% of all known vulnerabilities). Ready-made attack tooling exists: Nuclei. Fixed versions are available - upgrade the affected package.
Official description
Improper Input Validation vulnerability in Apache Tomcat.Tomcat from 11.0.0-M1 through 11.0.0-M11, from 10.1.0-M1 through 10.1.13, from 9.0.0-M1 through 9.0.81 and from 8.5.0 through 8.5.93 did not correctly parse HTTP trailer headers. A specially crafted, invalid trailer header 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-M12 onwards, 10.1.14 onwards, 9.0.81 onwards or 8.5.94 onwards, which fix the issue.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux:8 | tomcat | 1:9.0.62-27.el8_9.2 | ALSA-2024:0125 |
| AlmaLinux:9 | tomcat | 1:9.0.62-37.el9_3.1 | ALSA-2024:0474 |
| AlmaLinux:8 | tomcat-admin-webapps | 1:9.0.62-27.el8_9.2 | ALSA-2024:0125 |
| AlmaLinux:9 | tomcat-admin-webapps | 1:9.0.62-37.el9_3.1 | ALSA-2024:0474 |
| AlmaLinux:8 | tomcat-docs-webapp | 1:9.0.62-27.el8_9.2 | ALSA-2024:0125 |
| AlmaLinux:9 | tomcat-docs-webapp | 1:9.0.62-37.el9_3.1 | ALSA-2024:0474 |
| AlmaLinux:8 | tomcat-el-3.0-api | 1:9.0.62-27.el8_9.2 | ALSA-2024:0125 |
| AlmaLinux:9 | tomcat-el-3.0-api | 1:9.0.62-37.el9_3.1 | ALSA-2024:0474 |
| AlmaLinux:8 | tomcat-jsp-2.3-api | 1:9.0.62-27.el8_9.2 | ALSA-2024:0125 |
| AlmaLinux:9 | tomcat-jsp-2.3-api | 1:9.0.62-37.el9_3.1 | ALSA-2024:0474 |
| AlmaLinux:8 | tomcat-lib | 1:9.0.62-27.el8_9.2 | ALSA-2024:0125 |
| AlmaLinux:9 | tomcat-lib | 1:9.0.62-37.el9_3.1 | ALSA-2024:0474 |
| AlmaLinux:8 | tomcat-servlet-4.0-api | 1:9.0.62-27.el8_9.2 | ALSA-2024:0125 |
| AlmaLinux:9 | tomcat-servlet-4.0-api | 1:9.0.62-37.el9_3.1 | ALSA-2024:0474 |
| AlmaLinux:8 | tomcat-webapps | 1:9.0.62-27.el8_9.2 | ALSA-2024:0125 |
| AlmaLinux:9 | tomcat-webapps | 1:9.0.62-37.el9_3.1 | ALSA-2024:0474 |
| Debian:12 | tomcat10 | 10.1.6-1+deb12u1 | DEBIAN-CVE-2023-45648 |
| Debian:12 | tomcat10 | 10.1.6-1+deb12u1 | DSA-5521-1 |
| Debian:13 | tomcat10 | 10.1.14-1 | DEBIAN-CVE-2023-45648 |
| Debian:14 | tomcat10 | 10.1.14-1 | DEBIAN-CVE-2023-45648 |
| Debian:12 | tomcat9 | 9.0.70-2 | DEBIAN-CVE-2023-45648 |
| Debian:13 | tomcat9 | 9.0.70-2 | DEBIAN-CVE-2023-45648 |
| Debian:14 | tomcat9 | 9.0.70-2 | DEBIAN-CVE-2023-45648 |
| Maven | org.apache.tomcat.embed:tomcat-embed-core | 10.1.14 | GHSA-r6j3-px5g-cq3x |
| Maven | org.apache.tomcat.embed:tomcat-embed-core | 9.0.81 | GHSA-r6j3-px5g-cq3x |
| Maven | org.apache.tomcat.embed:tomcat-embed-core | 8.5.94 | GHSA-r6j3-px5g-cq3x |
| Maven | org.apache.tomcat.embed:tomcat-embed-core | 11.0.0-M12 | GHSA-r6j3-px5g-cq3x |
| Maven | org.apache.tomcat:tomcat | 9.0.81 | GHSA-r6j3-px5g-cq3x |
| Maven | org.apache.tomcat:tomcat | 11.0.0-M12 | GHSA-r6j3-px5g-cq3x |
| Maven | org.apache.tomcat:tomcat | 10.1.14 | GHSA-r6j3-px5g-cq3x |
| Maven | org.apache.tomcat:tomcat | 8.5.94 | GHSA-r6j3-px5g-cq3x |
| Maven | org.apache.tomcat:tomcat-coyote | 8.5.94 | GHSA-r6j3-px5g-cq3x |
| Maven | org.apache.tomcat:tomcat-coyote | 9.0.81 | GHSA-r6j3-px5g-cq3x |
| Maven | org.apache.tomcat:tomcat-coyote | 10.1.14 | GHSA-r6j3-px5g-cq3x |
| Maven | org.apache.tomcat:tomcat-coyote | 11.0.0-M12 | GHSA-r6j3-px5g-cq3x |
| Ubuntu:25.10 | tomcat9 | 9.0.70-2ubuntu3 | UBUNTU-CVE-2023-45648 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Apache Software Foundation | Apache Tomcat | 11.0.0-M1 – through 11.0.0-M1110.1.0-M1 – through 10.1.139.0.0-M1 – through 9.0.818.5.0 – through 8.5.93 |
Weakness: CWE-20 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
References
- https://lists.apache.org/thread/2pv8yz1pyp088tsxfb7ogltk9msk0jdp vendor-advisory
- http://www.openwall.com/lists/oss-security/2023/10/10/10 x_transferred
- https://www.debian.org/security/2023/dsa-5522 x_transferred
- https://www.debian.org/security/2023/dsa-5521 x_transferred
- https://lists.debian.org/debian-lts-announce/2023/10/msg00020.html x_transferred
- https://security.netapp.com/advisory/ntap-20231103-0007/ x_transferred