This page tracks the Debian fix status. The vulnerability itself is described on the main CVE page. View CVE-2021-23017 →

DEBIAN-CVE-2021-23017

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...

Original description

The description as published by the source.

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.

Source: OSV.dev (Open Source Vulnerabilities) OSV

Affected packages

Debian:12 nginx

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.18.0-6.1"}]}]

Debian:13 nginx

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.18.0-6.1"}]}]

Debian:14 nginx

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.18.0-6.1"}]}]

References

advisory security-tracker.debian.org