modules/exploits/linux/local/netfilter_xtables_heap_oob_write_priv_esc.rb
Method initialize
has 44 lines of code (exceeds 25 allowed). Consider refactoring. Open
Open
def initialize(info = {})
super(
update_info(
info,
'Name' => 'Netfilter x_tables Heap OOB Write Privilege Escalation',
Method check
has a Cognitive Complexity of 9 (exceeds 5 allowed). Consider refactoring. Open
Open
def check
unless kernel_modules.include? 'ip_tables'
vprint_warning('The ip_tables module is not loaded.')
return CheckCode::Safe('The ip_tables module is not loaded.')
end
- 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
Avoid too many return
statements within this method. Open
Open
return CheckCode::Safe("#{msgmni_path} is not readable.") if !readable?(msgmni_path)
Avoid too many return
statements within this method. Open
Open
return CheckCode::Safe("The kernel's MSGMNI queue size of #{msgmni} is too small for the exploit to execute successfully, making the target invulnerable. A minimum queue size of #{minimum_msgmni} is required. This setting can only be changed using sudo on the victim machine.")
Avoid too many return
statements within this method. Open
Open
return CheckCode::Appears("Target is running kernel release #{release}.")