Out of Bounds Access Leading to Undefined Behavior

CVE-2023-3040

What is CVE-2023-3040?

The lua-resty-json package by Cloudflare contains a vulnerability stemming from an out of bounds access in its debug function. This issue, present in versions prior to commit id 3ef9492bd3a44d9e51301d6adc3cd1789c8f534a, could allow an attacker to exploit the function when parsing untrusted data, potentially leading to a Denial of Service (DoS) condition. However, it is essential to note that this debug function is primarily utilized for testing and demonstration purposes, meaning it is not easily exploitable in typical deployment scenarios. For detailed information on this vulnerability, refer to the official advisory and pull request links.

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References