Detections
Analytics

Alpine: multiple nginx packages: security update to 1.20.1-r0

high Tenable Cloud Security Plugin ID 424206

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - 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. (CVE-2021-23017)

See Also

https://security.alpinelinux.org/vuln/CVE-2021-23017

Plugin Details

Severity: High

ID: 424206

Version: Revision 1.12

Type: Local

Published: 4/4/2025

Updated: 7/2/2026

Supported Sensors: Agentless Assessment, Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: High

Score: 7.3

Percentile: 98.46

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5.3

Vector: CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P

CVSS Score Source: CVE-2021-23017

CVSS v3

Risk Factor: High

Base Score: 7.7

Temporal Score: 6.9

Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

Vulnerability Information

Exploit Available: true

Exploit Ease: Exploits are available

Vulnerability Publication Date: 5/26/2021

Reference Information

CVE: CVE-2021-23017

IAVB: 2021-B-0031