vulnerability
Nginx: 1-byte memory overwrite in resolver (CVE-2021-23017)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 7 | (AV:N/AC:M/Au:N/C:P/I:P/A:P) | May 31, 2021 | May 31, 2021 | Mar 27, 2026 |
Severity
7
CVSS
(AV:N/AC:M/Au:N/C:P/I:P/A:P)
Published
May 31, 2021
Added
May 31, 2021
Modified
Mar 27, 2026
Description
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.
Solutions
nginx-nginx-upgrade-1_20_1nginx-nginx-upgrade-1_21_0
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