CVE-2021-23017 vulnerability in NGINX and Other Products
Published on June 1, 2021
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.
Weakness Type
What is an off-by-five Vulnerability?
A product calculates or uses an incorrect maximum or minimum value that is 1 more, or 1 less, than the correct value.
CVE-2021-23017 has been classified to as an off-by-five vulnerability or weakness.
Products Associated with CVE-2021-23017
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Exploit Probability
EPSS
73.17%
Percentile
98.76%
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.