Alpine: multiple icingaweb2 packages: security update to 2.8.2-r0 (deprecated)

medium Tenable Cloud Security Plugin ID 400192

Description

There are packages installed that are affected by multiple vulnerabilities referenced in the following CVEs:

- Icinga Web 2 is an open source monitoring web interface, framework and command-line interface. Between
versions 2.3.0 and 2.8.2, the `doc` module of Icinga Web 2 allows to view documentation directly in the
UI. It must be enabled manually by an administrator and users need explicit access permission to use it.
Then, by visiting a certain route, it is possible to gain access to arbitrary files readable by the web-
server user. The issue has been fixed in the 2.9.0, 2.8.3, and 2.7.5 releases. As a workaround, an
administrator may disable the `doc` module or revoke permission to use it from all users. (CVE-2021-32746)

- Icinga Web 2 is an open source monitoring web interface, framework, and command-line interface. A
vulnerability in which custom variables are exposed to unauthorized users exists between versions 2.0.0
and 2.8.2. Custom variables are user-defined keys and values on configuration objects in Icinga 2. These
are commonly used to reference secrets in other configurations such as check commands to be able to
authenticate with a service being checked. Icinga Web 2 displays these custom variables to logged in users
with access to said hosts or services. In order to protect the secrets from being visible to anyone, it's
possible to setup protection rules and blacklists in a user's role. Protection rules result in `***` being
shown instead of the original value, the key will remain. Backlists will hide a custom variable entirely
from the user. Besides using the UI, custom variables can also be accessed differently by using an
undocumented URL parameter. By adding a parameter to the affected routes, Icinga Web 2 will show these
columns additionally in the respective list. This parameter is also respected when exporting to JSON or
CSV. Protection rules and blacklists however have no effect in this case. Custom variables are shown as-is
in the result. The issue has been fixed in the 2.9.0, 2.8.3, and 2.7.5 releases. As a workaround, one may
set up a restriction to hide hosts and services with the custom variable in question. (CVE-2021-32747)

Plugin Details

Severity: Medium

ID: 400192

Version: Revision 1.23

Type: Local

Family: Alpine Linux Local Security Checks

Published: 8/16/2023

Updated: 7/2/2026

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

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.18

CVSS v2

Risk Factor: Medium

Base Score: 4

Temporal Score: 3.1

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

CVSS Score Source: CVE-2021-32747

CVSS v3

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.9

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

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

Vulnerability Information

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 7/16/2021

Vulnerability Publication Date: 7/12/2021

Reference Information

CVE: CVE-2021-32746, CVE-2021-32747

Detections

Analytics