CVE-2023-46589CWE-444

Apache Tomcat: HTTP request smuggling via malformed trailer headers

High · published November 28, 2023

CVSS v3.1
7.5
EPSS
3%
Percentile
85.5
In the wild
Unconfirmed
What it is

Improper Input Validation vulnerability in Apache Tomcat.Tomcat from 11.0.0-M1 through 11.0.0-M10, from 10.1.0-M1 through 10.1.15, from 9.0.0-M1 through 9.0.82 and from 8.5.0 through 8.5.95 did not correctly parse HTTP trailer headers. A trailer header that exceeded the header size limit 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-M11 onwards, 10.1.16 onwards, 9.0.83 onwards or 8.5.96 onwards, which fix the issue.

The record
Technical detail
CVSS v3.1
7.5 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
CVSS v4.0
Not supplied
EPSS
0.02651 · 85.5th percentile
Weakness
CWE-444 · Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
Published
2023-11-28T15:31Z
EPSS history
Timeline
  • 28 NOV 15:31Z
    Apache Tomcat: HTTP request smuggling via malformed trailer headers
    cvelistv5