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

2023-09-1519:37:37

CWE-130

GitHub_M

www.cve.org

cve-2023-40167; jetty; content-length; http/1 header; request smuggling; version 9.4.52; version 10.0.16; version 11.0.16; version 12.0.1; patch

5.3 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

LOW

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

5.7 Medium

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

26.0%

JSON

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.

CNA Affected

[
  {
    "vendor": "eclipse",
    "product": "jetty.project",
    "versions": [
      {
        "version": ">= 9.0.0, <= 9.4.51",
        "status": "affected"
      },
      {
        "version": ">= 10.0.0, <= 10.0.15",
        "status": "affected"
      },
      {
        "version": ">= 11.0.0, <= 11.0.15",
        "status": "affected"
      },
      {
        "version": "= 12.0.0",
        "status": "affected"
      }
    ]
  }
]