312-50V13 · Question #626
A large multinational corporation is in the process of evaluating its security infrastructure to identify potential vulnerabilities. After a comprehensive analysis, they found multiple areas of…
The correct answer is B. Ensuring atomicity of operations between checking and using data resources. To mitigate Time of Check/Time of Use (TOC/TOU) vulnerabilities, organizations should ensure the atomicity of operations between checking and using data resources.
Question
Options
- ARegular patching of servers, firmware, operating system, and applications
- BEnsuring atomicity of operations between checking and using data resources
- CFrequently updating firewall configurations to prevent intrusion attempts
- DImplementing stronger encryption algorithms for all data transfers
How the community answered
(51 responses)- A18% (9)
- B71% (36)
- C4% (2)
- D8% (4)
Why each option
To mitigate Time of Check/Time of Use (TOC/TOU) vulnerabilities, organizations should ensure the atomicity of operations between checking and using data resources.
Regular patching addresses known vulnerabilities in software but does not directly prevent or mitigate the logic flaw inherent in TOC/TOU race conditions within application design.
TOC/TOU errors occur when the condition of a resource is checked at one time (Time of Check) and then used at a later time (Time of Use), during which an attacker can change the resource's state. Ensuring atomicity of operations means that the check and the use of the resource happen as a single, uninterruptible operation, preventing race conditions and potential exploitation by an attacker.
Frequently updating firewall configurations helps prevent external intrusion attempts but does not address internal application logic flaws like TOC/TOU errors.
Implementing stronger encryption algorithms secures data during transfer but does not address vulnerabilities related to the timing of resource checks and uses within an application.
Concept tested: Mitigating Time of Check/Time of Use (TOC/TOU) race conditions
Source: https://cwe.mitre.org/data/definitions/367.html
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