File openmediavault_auth_cron_rce.rb
has 348 lines of code (exceeds 250 allowed). Consider refactoring. Open
class MetasploitModule < Msf::Exploit::Remote
Rank = ExcellentRanking
prepend Msf::Exploit::Remote::AutoCheck
include Msf::Exploit::Remote::HttpClient
include Msf::Exploit::CmdStager
Method execute_command
has 108 lines of code (exceeds 25 allowed). Consider refactoring. Open
def execute_command(cmd, _opts = {})
# OpenMediaFault current release - v6.0.15-1 uses an array definition ['*']
# OpenMediaVault v3.0.16 - v6.0.14-1 uses a string definition '*'
# OpenMediaVault v1.0.22 - v3.0.15 uses a string definition '*' and uuid setting 'undefined'
# OpenMediaVault v0.2.6.4 - v1.0.31 uses a string definition '*' and uuid setting 'undefined' and no execution parameter
Method initialize
has 65 lines of code (exceeds 25 allowed). Consider refactoring. Open
def initialize(info = {})
super(
update_info(
info,
'Name' => 'OpenMediaVault rpc.php Authenticated Cron Remote Code Execution',
Method login
has 52 lines of code (exceeds 25 allowed). Consider refactoring. Open
def login(user, pass)
print_status("#{peer} - Authenticating with OpenMediaVault using credentials #{user}:#{pass}")
# try the login options for all OpenMediaVault versions
res = send_request_cgi({
'uri' => normalize_uri(target_uri.path, 'rpc.php'),
Method execute_command
has a Cognitive Complexity of 14 (exceeds 5 allowed). Consider refactoring. Open
def execute_command(cmd, _opts = {})
# OpenMediaFault current release - v6.0.15-1 uses an array definition ['*']
# OpenMediaVault v3.0.16 - v6.0.14-1 uses a string definition '*'
# OpenMediaVault v1.0.22 - v3.0.15 uses a string definition '*' and uuid setting 'undefined'
# OpenMediaVault v0.2.6.4 - v1.0.31 uses a string definition '*' and uuid setting 'undefined' and no execution parameter
- Read upRead up
Cognitive Complexity
Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.
A method's cognitive complexity is based on a few simple rules:
- Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
- Code is considered more complex for each "break in the linear flow of the code"
- Code is considered more complex when "flow breaking structures are nested"
Further reading
Method check_version
has a Cognitive Complexity of 10 (exceeds 5 allowed). Consider refactoring. Open
def check_version(res)
# parse json response and get the version
res_json = res.get_json_document
unless res_json.blank?
# OpenMediaVault v0.3 - v0.5 and up to v4 have different json formats where index 1 has the version information
- Read upRead up
Cognitive Complexity
Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.
A method's cognitive complexity is based on a few simple rules:
- Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
- Code is considered more complex for each "break in the linear flow of the code"
- Code is considered more complex when "flow breaking structures are nested"
Further reading
Method exploit
has a Cognitive Complexity of 9 (exceeds 5 allowed). Consider refactoring. Open
def exploit
unless @logged_in
if login(user, pass)
res = check_target
fail_with(Failure::Unknown, 'Can not identify target as OpenMediaVault.') if res.nil?
- Read upRead up
Cognitive Complexity
Cognitive Complexity is a measure of how difficult a unit of code is to intuitively understand. Unlike Cyclomatic Complexity, which determines how difficult your code will be to test, Cognitive Complexity tells you how difficult your code will be to read and comprehend.
A method's cognitive complexity is based on a few simple rules:
- Code is not considered more complex when it uses shorthand that the language provides for collapsing multiple statements into one
- Code is considered more complex for each "break in the linear flow of the code"
- Code is considered more complex when "flow breaking structures are nested"
Further reading
Similar blocks of code found in 2 locations. Consider refactoring. Open
register_options(
[
OptString.new('TARGETURI', [true, 'The URI path of the OpenMediaVault web application', '/']),
OptString.new('USERNAME', [true, 'The OpenMediaVault username to authenticate with', 'admin']),
OptString.new('PASSWORD', [true, 'The OpenMediaVault password to authenticate with', 'openmediavault']),
- Read upRead up
Duplicated Code
Duplicated code can lead to software that is hard to understand and difficult to change. The Don't Repeat Yourself (DRY) principle states:
Every piece of knowledge must have a single, unambiguous, authoritative representation within a system.
When you violate DRY, bugs and maintenance problems are sure to follow. Duplicated code has a tendency to both continue to replicate and also to diverge (leaving bugs as two similar implementations differ in subtle ways).
Tuning
This issue has a mass of 30.
We set useful threshold defaults for the languages we support but you may want to adjust these settings based on your project guidelines.
The threshold configuration represents the minimum mass a code block must have to be analyzed for duplication. The lower the threshold, the more fine-grained the comparison.
If the engine is too easily reporting duplication, try raising the threshold. If you suspect that the engine isn't catching enough duplication, try lowering the threshold. The best setting tends to differ from language to language.
See codeclimate-duplication
's documentation for more information about tuning the mass threshold in your .codeclimate.yml
.
Refactorings
- Extract Method
- Extract Class
- Form Template Method
- Introduce Null Object
- Pull Up Method
- Pull Up Field
- Substitute Algorithm
Further Reading
- Don't Repeat Yourself on the C2 Wiki
- Duplicated Code on SourceMaking
- Refactoring: Improving the Design of Existing Code by Martin Fowler. Duplicated Code, p76