CVE-2022-42252

Apache Tomcat request smuggling via malformed content-length

Published Nov 1, 2022 CVSS 3.1 · 7.5 High EPSS 1.8% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Debian DLA Debian DLA DLA-3384-1 tomcat9 security update
Debian DSA Debian DSA DSA-5381-1 tomcat9 security update
EUVD EUVD EUVD-2022-7390 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.
Github GHSA Github GHSA GHSA-p22x-g9px-3945 Apache Tomcat may reject request containing invalid Content-Length header
Ubuntu USN Ubuntu USN USN-6880-1 Tomcat vulnerability
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
apache
Published
Updated
May 6, 2025, 3:09 PM
Reserved
Oct 3, 2022, 12:00 AM
Status
Modified
Published
Nov 1, 2022, 9:15 AM
Modified
Jun 17, 2026, 5:04 AM
Severity
Low
Public date
Oct 31, 2022, 12:00 AM