CVE-2023-46589

Description

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.

How to fix CVE-2023-46589

To remediate CVE-2023-46589, upgrade the affected package to a fixed version below.

—upgrade to 8.5.96 or later
—upgrade to 10.1.6-1+deb12u2 or later
—upgrade to 10.1.6-1+deb12u2 or later
—upgrade to 9.0.43-2~deb11u10 or later
—upgrade to 9.0.43-2~deb11u10 or later
—upgrade to 9.0.31-1~deb10u11 or later
—upgrade to 11.0.0-M11 or later
—upgrade to 11.0.0-M11 or later

Is CVE-2023-46589 being exploited?

Likely — EPSS is 53.2%, placing CVE-2023-46589 in the top tier of vulnerabilities by exploitation probability. Prioritise patching.

Affected packages (8)

>= 8.5.0, < 8.5.96, >= 9.0.0, < 9.0.83, >= 10.1.0, < 10.1.16
from 0, < 10.1.6-1+deb12u2
from 0, < 10.1.6-1+deb12u2
from 0, < 9.0.43-2~deb11u10
from 0, < 9.0.43-2~deb11u10
from 0, < 9.0.31-1~deb10u11
>= 11.0.0-M1, < 11.0.0-M11
>= 11.0.0-M1, < 11.0.0-M11

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