CVE-2022-42252
HIGH7.5EPSS 0.29%Apache Tomcat request smuggling via malformed content-length
Published: 11/1/2022Modified: 4/28/2026
Description
If Apache Tomcat 8.5.0 to 8.5.82, 9.0.0-M1 to 9.0.67, 10.0.0-M1 to 10.0.26 or 10.1.0-M1 to 10.1.0 was configured to ignore invalid HTTP headers via setting rejectIllegalHeader to false (the default for 8.5.x only), Tomcat did not reject a request containing an invalid Content-Length header making a request smuggling attack possible if Tomcat was located behind a reverse proxy that also failed to reject the request with the invalid header.
Affected packages (6)
- Bitnami/tomcat>= 8.5.0, < 8.5.83, >= 9.0.0, < 9.0.68, >= 10.0.0, < 10.0.27, >= 10.1.0, < 10.1.1
- Debian/tomcat9from 0, < 9.0.43-2~deb11u6
- Debian/tomcat9from 0, < 9.0.31-1~deb10u8
- Debian/tomcat9from 0, < 9.0.43-2~deb11u6
- Maven/org.apache.tomcat.embed:tomcat-embed-core>= 8.5.0, < 8.5.83
- Maven/org.apache.tomcat:tomcat-coyote>= 9.0.0-M1, < 9.0.68
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N |
References (12)
- ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2022-42252
- ADVISORYhttps://security-tracker.debian.org/tracker/CVE-2022-42252
- PATCHhttps://github.com/apache/tomcat
- WEBhttps://github.com/apache/tomcat/commit/0d089a15047faf9cb3c82f80f4d28febd4798920
- WEBhttps://github.com/apache/tomcat/commit/4c7f4fd09d2cc1692112ef70b8ee23a7a037ae77
- WEBhttps://github.com/apache/tomcat/commit/a1c07906d8dcaf7957e5cc97f5cdbac7d18a205a
- WEBhttps://github.com/apache/tomcat/commit/c9fe754e5d17e262dfbd3eab2a03ca96ff372dc3
- WEBhttps://lists.apache.org/thread/zzcxzvqfdqn515zfs3dxb7n8gty589sq
- WEBhttps://security.gentoo.org/glsa/202305-37
- WEBhttps://tomcat.apache.org/security-10.html
- WEBhttps://tomcat.apache.org/security-8.html
- WEBhttps://tomcat.apache.org/security-9.html