CWE-1045: Parent Class with a Virtual Destructor and a Child Class without a Virtual Destructor
A parent class has a virtual destructor method, but the parent has a child class that does not have a virtual destructor.
How it's found
Parent Class with a Virtual Destructor and a Child Class without a Virtual Destructor is typically found by tracing untrusted input from where it enters the system to the point where it is used without the check or neutralization this weakness describes, combining manual code review with dynamic testing.
Consequences
- Reduce Reliability: This issue can prevent the product from running reliably, since the child might not perform essential destruction operations. If the relevant code is reachable by an attacker, then this reliability problem might introduce a vulnerability, such as a memory leak (CWE-401).
Where this fits in a TurboPentest engagement
This weakness is not covered by the automated black-box pentest. IntegSec pentesters cover it in a manual engagement.
Frequently asked questions
What is CWE-1045?
A parent class has a virtual destructor method, but the parent has a child class that does not have a virtual destructor.
How do you find Parent Class with a Virtual Destructor and a Child Class without a Virtual Destructor?
Parent Class with a Virtual Destructor and a Child Class without a Virtual Destructor is typically found by tracing untrusted input from where it enters the system to the point where it is used without the check or neutralization this weakness describes, combining manual code review with dynamic testing.
What is the impact of CWE-1045?
Reduce Reliability: This issue can prevent the product from running reliably, since the child might not perform essential destruction operations. If the relevant code is reachable by an attacker, then this reliability problem might introduce a vulnerability, such as a memory leak (CWE-401).
Does TurboPentest test for Parent Class with a Virtual Destructor and a Child Class without a Virtual Destructor?
This weakness is not covered by the automated black-box pentest. IntegSec pentesters cover it in a manual engagement.
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Written and reviewed by
Michel Chamberland - Founder & CEO, IntegSec
CISSP, OSCP, OSCE, CEH, GIAC, CCSK · 20+ years in offensive security
Michel has spent 20+ years on offensive security teams including IBM X-Force Red and Trustwave SpiderLabs, leading penetration tests, red team engagements, and breach response for Fortune 500 customers. He is the founder of IntegSec and the architect of TurboPentest.
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