Detections
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Ruby REXML < 3.3.9 ReDoS vulnerability

high Nessus Plugin ID 210049

Synopsis

The remote host has an application installed that is affected by information disclosure vulnerability.

Description

The version of the REXML Ruby library installed on the remote host is prior to 3.3.9. It is, therefore, affected by a ReDoS vulnerability. The vulnerability lies when it parses an XML that has many digits between &# and x...; in a hex numeric character reference (&#x...;). This does not happen with Ruby 3.2 or later. Ruby 3.1 is the only affected maintained Ruby. The REXML gem 3.3.9 or later include the patch to fix the vulnerability.

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

Solution

Upgrade to REXML version 3.3.9 or Ruby 3.2 or later.

See Also

https://github.com/ruby/rexml/security/advisories/GHSA-2rxp-v6pw-ch6m

Plugin Details

Severity: High

ID: 210049

File Name: ruby_gem_rexml_CVE-2024-49761.nasl

Version: 1.4

Type: local

Agent: windows, macosx, unix

Family: Misc.

Published: 11/1/2024

Updated: 11/1/2024

Configuration: Enable thorough checks

Supported Sensors: Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.0

CVSS v2

Risk Factor: High

Base Score: 7.8

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

CVSS Score Source: CVE-2024-49761

CVSS v3

Risk Factor: High

Base Score: 7.5

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

CVSS v4

Risk Factor: High

Base Score: 8.7

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

Vulnerability Information

CPE: cpe:/a:ruby:rexml

Required KB Items: Host/nix/packages, Host/ruby/modules/enumerated

Patch Publication Date: 9/10/2024

Vulnerability Publication Date: 9/10/2024

Reference Information

CVE: CVE-2024-49761

IAVB: 2024-B-0163