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CodeSonar® 9.2p0 CONFIDENTIAL CodeSecure Inc
C and C++
Binaries

MISC.NULLDACL : Null Security Descriptor

Summary

SetSecurityDescriptorDacl() is called with a NULL security descriptor, which can lead to security vulnerabilities.

Properties

Class Name Null Security Descriptor
Significance security
Mnemonic MISC.NULLDACL
Categories
MisraC++2023 MisraC++2023:0.3.2 A function call shall not violate the function's preconditions
CWE CWE:284 Improper Access Control
OWASP-2017 OWASP-2017:A5 Broken access control
OWASP-2021 OWASP-2021:A1 Broken access control
  OWASP-2021:A4 Insecure design
OWASP-2025 OWASP-2025:A01 Broken Access Control
  OWASP-2025:A06 Insecure Design
Availability Available for C and C++.
Enabling Checks for this warning class are enabled by default. To disable them, add the following WARNING_FILTER rule to the project configuration file. 
WARNING_FILTER += discard class="Null Security Descriptor"

Example 

#include <windows.h>

int set_security_descriptor_dacl_bad(void)
{
    ACL sacl = {0,0,0,0,0};
    ACL dacl = {0,0,0,0,0};
    SECURITY_DESCRIPTOR sec = {0,0,0,0,0,&sacl,&dacl};
    return SetSecurityDescriptorDacl(&sec, TRUE, NULL, TRUE); // Warning issued here
}

Relevant Configuration File Parameters

The following configuration file parameters affect checks for this warning class.

 

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