5.3

CVE-2023-40167: Jetty accepts "+" prefixed value in Content-Length

Modified
AliasesUBUNTU-CVE-2023-40167DEBIAN-CVE-2023-40167CGA-3r8v-fqfv-v4f6
Published 15-09-2023Last modified 13-02-2025

Vulnerability summary

CVE-2023-40167 is a medium (CVSS 5.3) vulnerability in debian debian_linux. EPSS estimates a 1.28% chance of exploitation in the next 30 days, higher than 70% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 5.3, network access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
5.3/10
010
Medium · v3.1 (CVE.org)
EPSS score
1.28%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 6 · Related 4
DLA-3592-1DSA-5507-1RHSA-2024:0778RHSA-2024:0797RHSA-2024:2010SUSE-SU-2023:4210-1

Timeline

  1. 15-09-2023
    PublishedVulnerability first disclosed.
  2. 13-02-2025
    Last modifiedVulnerability information updated.

Description

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 allowed by the RFC and other servers routinely reject such requests with 400 responses. There is no known exploit scenario, but it is conceivable that request smuggling could result if jetty is used in combination with a server that does not close the connection after sending such a 400 response. Versions 9.4.52, 10.0.16, 11.0.16, and 12.0.1 contain a patch for this issue. There is no workaround as there is no known exploit scenario.

CVSS metrics

7 scores · 7 sources · 1 version

EPSS trend

Probability

1.28%

Chance of exploitation in the next 30 days

Percentile

70%

Versus all other CVEs

30-day change

No change 0.00 pp

From 1.28% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.

Chainguard7 products
  • cassandra-reaper< 4.0.1-r1
  • cloudwatch-exporter< 0.15.4-r3
  • druid< 37.0.0-r14 | < 37.0.0-r56 | < 35.0.1-r1
  • hadoop-fips-3.3.6All versions (No fix recorded)
  • hadoop-fips-3.4.2All versions (No fix recorded)
Wolfi3 products
  • cassandra-reaper< 4.0.1-r1
  • cloudwatch-exporter< 0.15.4-r3
  • druid< 37.0.0-r14 | < 37.0.0-r56 | < 35.0.1-r1
Debian2 products
  • jetty9< 9.4.50-4+deb12u1 | < 9.4.52-1
  • debian_linuxEOL10.0 | 11.0 | 12.0
Eclipse2 products
  • jetty≥ 9.0.0, < 9.4.52 | ≥ 10.0.0, < 10.0.16 | ≥ 11.0.0, < 11.0.16 | 12.0.0 | 12.0.0:beta0 | 12.0.0:beta1 | 12.0.0:beta2 | 12.0.0:beta3 | 12.0.0:beta4
  • jetty.project≥ 9.0.0, ≤ 9.4.51 | ≥ 10.0.0, ≤ 10.0.15 | ≥ 11.0.0, ≤ 11.0.15 | = 12.0.0
Org.eclipse.jetty1 product
  • jetty-http≥ 9.0.0, < 9.4.52 | ≥ 10.0.0, < 10.0.16 | ≥ 11.0.0, < 11.0.16 | ≥ 12.0.0, < 12.0.1
Ubuntu1 product
  • jetty9All versions (No fix recorded)

6 vendors · 16 products

References

10 links