Detections
Analytics

SCA: security update for puma (GHSA-84j7-475p-hp8v)

high Tenable Cloud Security Plugin ID 423003

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - In Puma (RubyGem) before 4.3.2 and before 3.12.3, if an application using Puma allows untrusted input in a
 response header, an attacker can use newline characters (i.e. `CR`, `LF` or`/r`, `/n`) to end the header
 and inject malicious content, such as additional headers or an entirely new response body. This
 vulnerability is known as HTTP Response Splitting. While not an attack in itself, response splitting is a
 vector for several other attacks, such as cross-site scripting (XSS). This is related to CVE-2019-16254,
 which fixed this vulnerability for the WEBrick Ruby web server. This has been fixed in versions 4.3.2 and
 3.12.3 by checking all headers for line endings and rejecting headers with those characters.
 (CVE-2020-5247)

See Also

https://github.com/advisories/GHSA-84j7-475p-hp8v

Plugin Details

Severity: High

ID: 423003

Version: Revision 1.3

Type: Local

Family: SCA Checks

Published: 3/29/2025

Updated: 7/2/2026

Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.18

Vendor

Vendor Severity: Medium

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:P/A:N

CVSS Score Source: CVE-2020-5247

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 2/28/2020

Vulnerability Publication Date: 1/15/2020

Reference Information

CVE: CVE-2020-5247

cwe: CWE-113