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cvelistGitHub_MCVELIST:CVE-2023-40175
HistoryAug 18, 2023 - 9:35 p.m.

CVE-2023-40175 Inconsistent Interpretation of HTTP Requests in puma

2023-08-1821:35:47
CWE-444
GitHub_M
www.cve.org
3
puma
http request smuggling
chunked transfer encoding

7.3 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

LOW

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

9.5 High

AI Score

Confidence

High

0.003 Low

EPSS

Percentile

65.2%

Puma is a Ruby/Rack web server built for parallelism. Prior to versions 6.3.1 and 5.6.7, puma exhibited incorrect behavior when parsing chunked transfer encoding bodies and zero-length Content-Length headers in a way that allowed HTTP request smuggling. Severity of this issue is highly dependent on the nature of the web site using puma is. This could be caused by either incorrect parsing of trailing fields in chunked transfer encoding bodies or by parsing of blank/zero-length Content-Length headers. Both issues have been addressed and this vulnerability has been fixed in versions 6.3.1 and 5.6.7. Users are advised to upgrade. There are no known workarounds for this vulnerability.

CNA Affected

[
  {
    "vendor": "puma",
    "product": "puma",
    "versions": [
      {
        "version": "< 5.6.7",
        "status": "affected"
      },
      {
        "version": ">= 6.0.0, < 6.3.1",
        "status": "affected"
      }
    ]
  }
]

7.3 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

LOW

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

9.5 High

AI Score

Confidence

High

0.003 Low

EPSS

Percentile

65.2%