CVE-2022-42252

Apache Tomcat request smuggling via malformed content-length

State: Published
Severity: 7.5 High
Published: Nov 1, 2022
Updated: May 6, 2025
Reserved: Oct 3, 2022

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.

Scores

CVSS	Score	Vector	Source
3.1	7.5 High	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N	CISA-ADP

Weaknesses

CWE-444 Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')

Affected Products

Product	Versions
Apache TomcatApache Software Foundation	10.1.0-M1 through 10.1.0Affected 10.0.0-M1 through 10.0.26Affected 9.0.0-M1 through 9.0.67Affected 8.5.0 through 8.5.82Affected

References

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