CVE-2021-23017
nginx: Off-by-one in ngx_resolver_copy() when labels are followed by a pointer to a root domain name
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.
CVSS 3.1 · 7.7 High
EPSS 53.5%
KEV · Not listed
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