Alpine: singularity: security update to 3.7.3-r0 (deprecated)

medium Tenable Cloud Security Plugin ID 400214

Description

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

- Singularity is an open source container platform. In verions 3.7.2 and 3.7.3, Dde to incorrect use of a
default URL, `singularity` action commands (`run`/`shell`/`exec`) specifying a container using a
`library://` URI will always attempt to retrieve the container from the default remote endpoint
(`cloud.sylabs.io`) rather than the configured remote endpoint. An attacker may be able to push a
malicious container to the default remote endpoint with a URI that is identical to the URI used by a
victim with a non-default remote endpoint, thus executing the malicious container. Only action commands
(`run`/`shell`/`exec`) against `library://` URIs are affected. Other commands such as `pull` / `push`
respect the configured remote endpoint. The vulnerability is patched in Singularity version 3.7.4. Two
possible workarounds exist: Users can only interact with the default remote endpoint, or an installation
can have an execution control list configured to restrict execution to containers signed with specific
secure keys. (CVE-2021-32635)

Plugin Details

Severity: Medium

ID: 400214

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: 2.8

Percentile: 22.22

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5

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

CVSS Score Source: CVE-2021-32635

CVSS v3

Risk Factor: Medium

Base Score: 6.3

Temporal Score: 5.5

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

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

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 5/27/2021

Vulnerability Publication Date: 5/26/2021

Reference Information

CVE: CVE-2021-32635

Detections

Analytics