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broadcomBroadcom Security ResponseBSNSA21214
HistoryNov 08, 2022 - 12:00 a.m.

CVE-2021-23017: NGINX Resolver Vulnerability

2022-11-0800:00:00
Broadcom Security Response
support.broadcom.com
34
nginx
resolver
vulnerability
udp
forging
memory overwrite
worker process crash

AI Score

7.2

Confidence

Low

EPSS

0.316

Percentile

97.1%

Security Advisory ID : BSA-2021-1516

Component : NGINX

Revision : 1.0

**

****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.