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Slackware Linux 15.0 / current ruby Multiple Vulnerabilities (SSA:2022-103-01)

critical Nessus Plugin ID 159726

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Synopsis

The remote Slackware Linux host is missing a security update to ruby.

Description

The version of ruby installed on the remote host is prior to 3.0.4 / 3.1.2. It is, therefore, affected by multiple vulnerabilities as referenced in the SSA:2022-103-01 advisory.

 - There is a buffer over-read in Ruby before 2.6.10, 2.7.x before 2.7.6, 3.x before 3.0.4, and 3.1.x before 3.1.2. It occurs in String-to-Float conversion, including Kernel#Float and String#to_f. (CVE-2022-28739)

 - A double free was found in the Regexp compiler in Ruby 3.x before 3.0.4 and 3.1.x before 3.1.2. If a victim attempts to create a Regexp from untrusted user input, an attacker may be able to write to unexpected memory locations. (CVE-2022-28738)

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

Solution

Upgrade the affected ruby package.

Plugin Details

Severity: Critical

ID: 159726

File Name: Slackware_SSA_2022-103-01.nasl

Version: 1.5

Type: local

Published: 4/13/2022

Updated: 5/23/2022

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 5.5

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

CVSS Score Source: CVE-2022-28738

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.5

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

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

Vulnerability Information

CPE: p-cpe:/a:slackware:slackware_linux:ruby, cpe:/o:slackware:slackware_linux, cpe:/o:slackware:slackware_linux:15.0

Required KB Items: Host/local_checks_enabled, Host/Slackware/release, Host/Slackware/packages

Exploit Ease: No known exploits are available

Vulnerability Publication Date: 4/13/2022

Reference Information

CVE: CVE-2022-28738, CVE-2022-28739