CVE-2023-45648: Apache Tomcat: Trailer header parsing too lenient
First published: Tue Oct 10 2023(Updated: )
Apache Tomcat is vulnerable to HTTP request smuggling, caused by improper parsing of HTTP trailer headers. By sending a specially crafted invalid trailer header, an attacker could exploit this vulnerability to poison the web cache, bypass web application firewall protection, and conduct XSS attacks.
Credit: security@apache.org security@apache.org security@apache.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| debian/tomcat10 | 10.1.6-1+deb12u1 10.1.16-1 | |
| debian/tomcat9 | <=9.0.31-1~deb10u6<=9.0.43-2~deb11u6 | 9.0.31-1~deb10u10 9.0.43-2~deb11u9 9.0.70-2 |
| maven/org.apache.tomcat.embed:tomcat-embed-core | >=8.5.0<8.5.94 | 8.5.94 |
| maven/org.apache.tomcat.embed:tomcat-embed-core | >=9.0.0-M1<9.0.81 | 9.0.81 |
| maven/org.apache.tomcat.embed:tomcat-embed-core | >=10.1.0-M1<10.1.14 | 10.1.14 |
| maven/org.apache.tomcat.embed:tomcat-embed-core | >=11.0.0-M1<11.0.0-M12 | 11.0.0-M12 |
| maven/org.apache.tomcat:tomcat | >=8.5.0<8.5.94 | 8.5.94 |
| maven/org.apache.tomcat:tomcat | >=9.0.0-M1<9.0.81 | 9.0.81 |
| maven/org.apache.tomcat:tomcat | >=10.1.0-M1<10.1.14 | 10.1.14 |
| maven/org.apache.tomcat:tomcat | >=11.0.0-M1<11.0.0-M12 | 11.0.0-M12 |
| redhat/tomcat | <11.0.0 | 11.0.0 |
| redhat/tomcat | <10.1.14 | 10.1.14 |
| redhat/tomcat | <9.0.81 | 9.0.81 |
| redhat/tomcat | <8.5.94 | 8.5.94 |
| IBM Engineering Requirements Management DOORS Web Access | <=9.7.2.7 | |
| IBM Rational DOORS Web Access | <=9.7.2.7 | |
| Tomcat | >=8.5.0<8.5.94 | |
| Tomcat | >=9.0.1<9.0.81 | |
| Tomcat | >=10.1.1<10.1.14 | |
| Tomcat | =9.0.0-milestone1 | |
| Tomcat | =9.0.0-milestone10 | |
| Tomcat | =9.0.0-milestone11 | |
| Tomcat | =9.0.0-milestone12 | |
| Tomcat | =9.0.0-milestone13 | |
| Tomcat | =9.0.0-milestone14 | |
| Tomcat | =9.0.0-milestone15 | |
| Tomcat | =9.0.0-milestone16 | |
| Tomcat | =9.0.0-milestone17 | |
| Tomcat | =9.0.0-milestone18 | |
| Tomcat | =9.0.0-milestone19 | |
| Tomcat | =9.0.0-milestone2 | |
| Tomcat | =9.0.0-milestone20 | |
| Tomcat | =9.0.0-milestone21 | |
| Tomcat | =9.0.0-milestone22 | |
| Tomcat | =9.0.0-milestone23 | |
| Tomcat | =9.0.0-milestone24 | |
| Tomcat | =9.0.0-milestone25 | |
| Tomcat | =9.0.0-milestone26 | |
| Tomcat | =9.0.0-milestone27 | |
| Tomcat | =9.0.0-milestone3 | |
| Tomcat | =9.0.0-milestone4 | |
| Tomcat | =9.0.0-milestone5 | |
| Tomcat | =9.0.0-milestone6 | |
| Tomcat | =9.0.0-milestone7 | |
| Tomcat | =9.0.0-milestone8 | |
| Tomcat | =9.0.0-milestone9 | |
| Tomcat | =10.1.0-milestone1 | |
| Tomcat | =10.1.0-milestone10 | |
| Tomcat | =10.1.0-milestone11 | |
| Tomcat | =10.1.0-milestone12 | |
| Tomcat | =10.1.0-milestone13 | |
| Tomcat | =10.1.0-milestone14 | |
| Tomcat | =10.1.0-milestone15 | |
| Tomcat | =10.1.0-milestone16 | |
| Tomcat | =10.1.0-milestone17 | |
| Tomcat | =10.1.0-milestone18 | |
| Tomcat | =10.1.0-milestone19 | |
| Tomcat | =10.1.0-milestone2 | |
| Tomcat | =10.1.0-milestone20 | |
| Tomcat | =10.1.0-milestone3 | |
| Tomcat | =10.1.0-milestone4 | |
| Tomcat | =10.1.0-milestone5 | |
| Tomcat | =10.1.0-milestone6 | |
| Tomcat | =10.1.0-milestone7 | |
| Tomcat | =10.1.0-milestone8 | |
| Tomcat | =10.1.0-milestone9 | |
| Tomcat | =11.0.0-milestone1 | |
| Tomcat | =11.0.0-milestone10 | |
| Tomcat | =11.0.0-milestone11 | |
| Tomcat | =11.0.0-milestone2 | |
| Tomcat | =11.0.0-milestone3 | |
| Tomcat | =11.0.0-milestone4 | |
| Tomcat | =11.0.0-milestone5 | |
| Tomcat | =11.0.0-milestone6 | |
| Tomcat | =11.0.0-milestone7 | |
| Tomcat | =11.0.0-milestone8 | |
| Tomcat | =11.0.0-milestone9 | |
| Debian Linux | =10.0 | |
| Debian Linux | =11.0 | |
| Debian Linux | =12.0 |
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Reference Links
- http://www.openwall.com/lists/oss-security/2023/10/10/10
- https://lists.apache.org/thread/2pv8yz1pyp088tsxfb7ogltk9msk0jdp
- https://lists.debian.org/debian-lts-announce/2023/10/msg00020.html
- https://www.debian.org/security/2023/dsa-5521
- https://www.debian.org/security/2023/dsa-5522
- https://security.netapp.com/advisory/ntap-20231103-0007/
- https://www.openwall.com/lists/oss-security/2023/10/10/10
- https://security-tracker.debian.org/tracker/CVE-2023-45648
- https://nvd.nist.gov/vuln/detail/CVE-2023-45648
- https://github.com/apache/tomcat/commit/59583245639d8c42ae0009f4a4a70464d3ea70a0
- https://github.com/apache/tomcat/commit/8ecff306507be8e4fd3adee1ae5de1ea6661a8f4
- https://github.com/apache/tomcat/commit/eb5c094e5560764cda436362254997511a3ca1f6
- https://github.com/advisories/GHSA-r6j3-px5g-cq3x (Advisory)
- https://exchange.xforce.ibmcloud.com/vulnerabilities/268200
- https://www.ibm.com/support/pages/node/7124058 (Advisory)
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2245764
- https://access.redhat.com/errata/RHSA-2023:6207
- https://access.redhat.com/errata/RHSA-2023:6206
- https://access.redhat.com/errata/RHSA-2023:7247
- https://access.redhat.com/errata/RHSA-2024:0125
- https://access.redhat.com/errata/RHSA-2024:0474
- https://bugzilla.redhat.com/show_bug.cgi?id=2243749
- https://github.com/apache/tomcat/commit/c83fe47725f7ae9ae213568d9039171124fb7ec6
- https://security.netapp.com/advisory/ntap-20231103-0007
Frequently Asked Questions
What is CVE-2023-45648?
CVE-2023-45648 is a vulnerability in Apache Tomcat that allows for improper input validation.
Which versions of Apache Tomcat are affected by CVE-2023-45648?
Apache Tomcat versions 11.0.0-M1 through 11.0.0-M11, 10.1.0-M1 through 10.1.13, 9.0.0-M1 through 9.0.81, and 8.5.0 through 8.5.93 are affected by CVE-2023-45648.
How can a specially crafted trailer header exploit CVE-2023-45648?
A specially crafted, invalid trailer header can exploit CVE-2023-45648 by causing Tomcat to incorrectly parse HTTP trailer headers.
What is the severity of CVE-2023-45648?
The severity of CVE-2023-45648 is not specified.
How can I fix CVE-2023-45648?
To fix CVE-2023-45648, update Apache Tomcat to versions 8.5.94, 9.0.81, 10.1.14, or 11.0.0-M12 depending on the affected version.
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