Detections
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Ubuntu 16.04 LTS / 18.04 LTS : Rails vulnerability (USN-7646-1)

high Nessus Plugin ID 242277

Synopsis

The remote Ubuntu host is missing a security update.

Description

The remote Ubuntu 16.04 LTS / 18.04 LTS host has packages installed that are affected by a vulnerability as referenced in the USN-7646-1 advisory.

 It was discovered that Rails did not correctly handle headers. An attacker could potentially use this issue to view arbitrary files on a target server. (CVE-2019-5418)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Update the affected packages.

See Also

https://ubuntu.com/security/notices/USN-7646-1

Plugin Details

Severity: High

ID: 242277

File Name: ubuntu_USN-7646-1.nasl

Version: 1.1

Type: local

Agent: unix

Published: 7/17/2025

Updated: 7/17/2025

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 4.1

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

CVSS Score Source: CVE-2019-5418

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 7

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

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

Vulnerability Information

CPE: cpe:/o:canonical:ubuntu_linux:18.04:-:lts, cpe:/o:canonical:ubuntu_linux:16.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:rails, p-cpe:/a:canonical:ubuntu_linux:ruby-actionmailer, p-cpe:/a:canonical:ubuntu_linux:ruby-actionpack, p-cpe:/a:canonical:ubuntu_linux:ruby-actionview, p-cpe:/a:canonical:ubuntu_linux:ruby-activejob, p-cpe:/a:canonical:ubuntu_linux:ruby-activemodel, p-cpe:/a:canonical:ubuntu_linux:ruby-activerecord, p-cpe:/a:canonical:ubuntu_linux:ruby-activesupport, p-cpe:/a:canonical:ubuntu_linux:ruby-rails, p-cpe:/a:canonical:ubuntu_linux:ruby-railties

Required KB Items: Host/cpu, Host/Debian/dpkg-l, Host/Ubuntu, Host/Ubuntu/release

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 7/17/2025

Vulnerability Publication Date: 3/13/2019

CISA Known Exploited Vulnerability Due Dates: 7/28/2025

Reference Information

CVE: CVE-2019-5418

USN: 7646-1