Alpine: busybox: security update to 1.31.1-r21

high Tenable Cloud Security Plugin ID 403742

Description

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

- A use-after-free in Busybox's awk applet leads to denial of service and possibly code execution when
processing a crafted awk pattern in the nvalloc function (CVE-2021-42386)

- An out-of-bounds heap read in Busybox's unlzma applet leads to information leak and denial of service when
crafted LZMA-compressed input is decompressed. This can be triggered by any applet/format that
(CVE-2021-42374)

- A use-after-free in Busybox's awk applet leads to denial of service and possibly code execution when
processing a crafted awk pattern in the getvar_i function (CVE-2021-42378)

- A use-after-free in Busybox's awk applet leads to denial of service and possibly code execution when
processing a crafted awk pattern in the next_input_file function (CVE-2021-42379)

- A use-after-free in Busybox's awk applet leads to denial of service and possibly code execution when
processing a crafted awk pattern in the clrvar function (CVE-2021-42380)

Plugin Details

Severity: High

ID: 403742

Version: Revision 1.33

Type: Local

Family: Alpine Linux Local Security Checks

Published: 10/31/2023

Updated: 7/2/2026

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

Risk Information

VPR

Risk Factor: Medium

Score: 6.2

Percentile: 96.77

CVSS v2

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.1

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

CVSS Score Source: CVE-2021-42386

CVSS v3

Risk Factor: High

Base Score: 7.2

Temporal Score: 6.5

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

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

Vulnerability Information

Exploit Available: true

Exploit Ease: Exploits are available

Vulnerability Publication Date: 11/9/2021

Reference Information

CVE: CVE-2021-42374, CVE-2021-42378, CVE-2021-42379, CVE-2021-42380, CVE-2021-42381, CVE-2021-42382, CVE-2021-42383, CVE-2021-42384, CVE-2021-42385, CVE-2021-42386

Detections

Analytics