CVE-2023-45648CWE-20

Apache Tomcat: Trailer header parsing too lenient

Medium · published October 10, 2023

CVSS v3.1
5.3
EPSS
6%
Percentile
93.2
In the wild
Unconfirmed
What it is

Improper Input Validation vulnerability in Apache Tomcat.Tomcat from 11.0.0-M1 through 11.0.0-M11, from 10.1.0-M1 through 10.1.13, from 9.0.0-M1 through 9.0.81 and from 8.5.0 through 8.5.93 did not correctly parse HTTP trailer headers. A specially

crafted, invalid trailer header 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-M12 onwards, 10.1.14 onwards, 9.0.81 onwards or 8.5.94 onwards, which fix the issue.

The record
Technical detail
CVSS v3.1
5.3 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.05883 · 93.2th percentile
Weakness
CWE-20 · Improper Input Validation
Published
2023-10-10T18:38Z
EPSS history
Timeline
  • 10 OCT 18:38Z
    Apache Tomcat: Trailer header parsing too lenient
    cvelistv5