CVE-2024-45614

Sept. 26, 2024, 1:28 p.m.

CVSS Score

5.4 / 10

Products Impacted

Vendor Product Versions
puma
  • puma
  • *

Description

Puma is a Ruby/Rack web server built for parallelism. In affected versions clients could clobber values set by intermediate proxies (such as X-Forwarded-For) by providing a underscore version of the same header (X-Forwarded_For). Any users relying on proxy set variables is affected. v6.4.3/v5.6.9 now discards any headers using underscores if the non-underscore version also exists. Effectively, allowing the proxy defined headers to always win. Users are advised to upgrade. Nginx has a underscores_in_headers configuration variable to discard these headers at the proxy level as a mitigation. Any users that are implicitly trusting the proxy defined headers for security should immediately cease doing so until upgraded to the fixed versions.

Weaknesses

CWE-444
Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')

The product acts as an intermediary HTTP agent (such as a proxy or firewall) in the data flow between two entities such as a client and server, but it does not interpret malformed HTTP requests or responses in ways that are consistent with how the messages will be processed by those entities that are at the ultimate destination.

CWE ID: 444
CWE-639
Authorization Bypass Through User-Controlled Key

The system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data.

CWE ID: 639

Date

Published: Sept. 19, 2024, 11:15 p.m.

Last Modified: Sept. 26, 2024, 1:28 p.m.

Status : Analyzed

CVE has had analysis completed and all data associations made.

More info

Source

security-advisories@github.com

CPEs

Type Vendor Product Version Update Edition Language Software Edition Target Software Target Hardware Other Information
a puma puma / / / / / ruby / /
a puma puma / / / / / ruby / /

CVSS Data

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

Scope

CHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

NONE

Base Score
5.4
Exploitability Score
2.2
Impact Score
2.7
Base Severity
MEDIUM
CVSS Vector String

The CVSS vector string provides an in-depth view of the vulnerability metrics.

View Vector String

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

References