Detections
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CBL Mariner 2.0 Security Update: ruby / rubygem-rexml (CVE-2024-43398)

high Nessus Plugin ID 241903

Synopsis

The remote CBL Mariner host is missing one or more security updates.

Description

The version of ruby / rubygem-rexml installed on the remote CBL Mariner 2.0 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the CVE-2024-43398 advisory.

 - REXML is an XML toolkit for Ruby. The REXML gem before 3.3.6 has a DoS vulnerability when it parses an XML that has many deep elements that have same local name attributes. If you need to parse untrusted XMLs with tree parser API like REXML::Document.new, you May be impacted to this vulnerability. If you use other parser APIs such as stream parser API and SAX2 parser API, this vulnerability is not affected. The REXML gem 3.3.6 or later include the patch to fix the vulnerability. (CVE-2024-43398)

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://nvd.nist.gov/vuln/detail/CVE-2024-43398

Plugin Details

Severity: High

ID: 241903

File Name: mariner_CVE-2024-43398.nasl

Version: 1.1

Type: local

Published: 7/11/2025

Updated: 7/11/2025

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

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

CVSS Score Source: CVE-2024-43398

CVSS v3

Risk Factor: Medium

Base Score: 5.9

Temporal Score: 5.2

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

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

CVSS v4

Risk Factor: High

Base Score: 8.2

Threat Score: 4.6

Threat Vector: CVSS:4.0/E:U

Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Vulnerability Information

CPE: x-cpe:/o:microsoft:cbl-mariner, p-cpe:/a:microsoft:cbl-mariner:rubygems-devel, p-cpe:/a:microsoft:cbl-mariner:rubygem-rexml, p-cpe:/a:microsoft:cbl-mariner:rubygems, p-cpe:/a:microsoft:cbl-mariner:ruby, p-cpe:/a:microsoft:cbl-mariner:ruby-debuginfo

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/CBLMariner/release, Host/CBLMariner/rpm-list

Exploit Ease: No known exploits are available

Patch Publication Date: 7/8/2025

Vulnerability Publication Date: 8/22/2024

Reference Information

CVE: CVE-2024-43398

IAVB: 2024-B-0124-S