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A security issue in nginx resolver was identified, which might allow an attacker who is able to forge UDP packets from the DNS server to cause 1-byte memory overwrite, resulting in worker process crash or potential other impact.
Use CWE-193, F5 vendor hub and Nginx product page to widen CVE-2021-23017 into its surrounding weakness, vendor, and product context.
Compare it with CVE-2023-44487, CVE-2017-20005 and CVE-2019-9513 for nearby disclosures in the same product family.