What is CVE-2023-40167?

CVE-2023-40167 is a medium-severity vulnerability in Eclipse Jetty.project, classified under Improper Handling of Length Parameter Inconsistency. CVSS score: 5.3/10. Published 2023-09-15.

How severe is CVE-2023-40167?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Is CVE-2023-40167 known to be exploited?

3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Eclipse Jetty.project

CVE-2023-40167

Jetty is a Java based web server and servlet engine. Prior to versions 9.4.52, 10.0.16, 11.0.16, and 12.0.1, Jetty accepts the `+` character proceeding the content-length value in a HTTP/1 header field. This is more permissive than allowe…

EPSS: 0.046 (89.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N.

Affected products

Eclipse Jetty.project — versions >= 9.0.0, <= 9.4.51, >= 10.0.0, <= 10.0.15, >= 11.0.0, <= 11.0.15

Weakness classification (CWE)

CWE-130 — Improper Handling of Length Parameter Inconsistency

Public proof-of-concept exploits

References

https://github.com/eclipse/jetty.project/security/advisories/GHSA-hmr7-m48g-48f6 (x_refsource_CONFIRM)
https://www.rfc-editor.org/rfc/rfc9110#section-8.6 (x_refsource_MISC)
www.debian.org/security/2023/dsa-5507
lists.debian.org/debian-lts-announce/2023/09/msg00039.html

Frequently asked questions

What is CVE-2023-40167?: CVE-2023-40167 is a medium-severity vulnerability in Eclipse Jetty.project, classified under Improper Handling of Length Parameter Inconsistency. CVSS score: 5.3/10. Published 2023-09-15.
How severe is CVE-2023-40167?: Medium severity. CVSS v3 base score is 5.3 out of 10.
Is CVE-2023-40167 known to be exploited?: 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.