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Alpine: multiple nginx packages: security update to 1.20.1-r1

high Tenable Cloud Security Plugin ID 424209

Description

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

 - ALPACA is an application layer protocol content confusion attack, exploiting TLS servers implementing
 different protocols but using compatible certificates, such as multi-domain or wildcard certificates. A
 MiTM attacker having access to victim's traffic at the TCP/IP layer can redirect traffic from one
 subdomain to another, resulting in a valid TLS session. This breaks the authentication of TLS and cross-
 protocol attacks may be possible where the behavior of one protocol service may compromise the other at
 the application layer. (CVE-2021-3618)

See Also

https://security.alpinelinux.org/vuln/CVE-2021-3618

Plugin Details

Severity: High

ID: 424209

Version: Revision 1.8

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: Medium

Score: 4.3

Percentile: 53.59

CVSS v2

Risk Factor: Medium

Base Score: 5.8

Temporal Score: 4.3

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

CVSS Score Source: CVE-2021-3618

CVSS v3

Risk Factor: High

Base Score: 7.4

Temporal Score: 6.4

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

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

Vulnerability Information

Exploit Ease: No known exploits are available

Vulnerability Publication Date: 10/25/2021

Reference Information

CVE: CVE-2021-3618