Detections
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Ruby REXML < 3.3.9 ReDoS vulnerability
high Nessus Plugin ID 210049
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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: 1.5
Type: local
Agent: windows, macosx, unix
Family: Misc.
Published: 11/1/2024
Updated: 11/4/2024
Configuration: Enable thorough checks
Supported Sensors: Nessus Agent, 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-2024-49761
CVSS v3
Risk Factor: High
Base Score: 7.5
Temporal Score: 6.5
Vector: CVSS:3.0/AV:N/AC:L/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: 8.7
Threat Score: 6.6
Threat Vector: CVSS:4.0/E:U
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
Exploit Ease: No known exploits are available
Patch Publication Date: 9/10/2024
Vulnerability Publication Date: 9/10/2024
Reference Information
CVE: CVE-2024-49761
IAVB: 2024-B-0163