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NoFunEval / src /evaluation /qls_for_security /python /cwe-798_HardcodedCredentials-a.ql

ManavSinghal157

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/**
 * @name Check for CWE-798 in codeql-eg-HardcodedCredentials-a
 * @description 
 * @kind problem
 * @problem.severity warning
 * @id custom-cpp/cwe-798_codeql-eg-HardcodedCredentials-a
 */

import python
import semmle.python.dataflow.new.DataFlow
import semmle.python.dataflow.new.TaintTracking

string getACredentialRegex() {
    result = "(?i).*pass(wd|word|code|phrase)(?!.*question).*" 
    //or
    //result = "(?i).*(puid|username|userid).*" or
    //result = "(?i).*(cert)(?!.*(format|name)).*"
  }

from Compare cmp, Expr literal
where 
    literal instanceof StrConst
    and
    cmp.getOp(0) instanceof Eq
    and
    (
      (
        cmp.getComparator(0) =literal
        and
        cmp.getLeft().toString().regexpMatch(getACredentialRegex())
        )
      or
      (
        cmp.getLeft() =literal
        and
        cmp.getComparator(0).toString().regexpMatch(getACredentialRegex())
        )
    )
select cmp, "cwe-798: "+cmp.toString()+ " at line "+ cmp.getLocation().getStartLine()+
" is a password comparison with a string literal"

	/**
	* @name Check for CWE-798 in codeql-eg-HardcodedCredentials-a
	* @description
	* @kind problem
	* @problem.severity warning
	* @id custom-cpp/cwe-798_codeql-eg-HardcodedCredentials-a
	*/

	import python
	import semmle.python.dataflow.new.DataFlow
	import semmle.python.dataflow.new.TaintTracking

	string getACredentialRegex() {
	result = "(?i).pass(wd\|word\|code\|phrase)(?!.question).*"
	//or
	//result = "(?i).(puid\|username\|userid)." or
	//result = "(?i).(cert)(?!.(format\|name)).*"
	}

	from Compare cmp, Expr literal
	where
	literal instanceof StrConst
	and
	cmp.getOp(0) instanceof Eq
	and
	(
	(
	cmp.getComparator(0) =literal
	and
	cmp.getLeft().toString().regexpMatch(getACredentialRegex())
	)
	or
	(
	cmp.getLeft() =literal
	and
	cmp.getComparator(0).toString().regexpMatch(getACredentialRegex())
	)
	)
	select cmp, "cwe-798: "+cmp.toString()+ " at line "+ cmp.getLocation().getStartLine()+
	" is a password comparison with a string literal"