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Ubuntu 23.04 : Ruby vulnerabilities (USN-6181-1)

high Nessus Plugin ID 177472

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Synopsis

The remote Ubuntu host is missing one or more security updates.

Description

The remote Ubuntu 23.04 host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-6181-1 advisory.

 Hiroshi Tokumaru discovered that Ruby did not properly handle certain user input for applications the generate HTTP responses using cgi gem. An attacker could possibly use this issue to maliciously modify the response a user would receive from a vulnerable application. This issue only affected Ubuntu 22.10.
 (CVE-2021-33621)

 It was discovered that Ruby incorrectly handled certain regular expressions. An attacker could possibly use this issue to cause a denial of service. (CVE-2023-28755, CVE-2023-28756)

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

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

Solution

Update the affected libruby3.1, ruby3.1 and / or ruby3.1-dev packages.

See Also

https://ubuntu.com/security/notices/USN-6181-1

Plugin Details

Severity: High

ID: 177472

File Name: ubuntu_USN-6181-1.nasl

Version: 1.4

Type: local

Agent: unix

Published: 6/21/2023

Updated: 8/27/2024

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

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: High

Base Score: 9

Temporal Score: 7

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

CVSS Score Source: CVE-2021-33621

CVSS v3

Risk Factor: High

Base Score: 8.8

Temporal Score: 7.9

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

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

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:ruby3.1-dev, cpe:/o:canonical:ubuntu_linux:23.04, p-cpe:/a:canonical:ubuntu_linux:libruby3.1, p-cpe:/a:canonical:ubuntu_linux:ruby3.1

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: 6/21/2023

Vulnerability Publication Date: 11/18/2022

Reference Information

CVE: CVE-2021-33621, CVE-2023-28755, CVE-2023-28756

USN: 6181-1