Detections
Analytics

Alpine: multiple lz4 packages: security update to 1.9.3-r1

critical Tenable Self-Hosted Container Security Plugin ID 424159

Description

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

 - There's a flaw in lz4. An attacker who submits a crafted file to an application linked with lz4 may be
 able to trigger an integer overflow, leading to calling of memmove() on a negative size argument, causing
 an out-of-bounds write and/or a crash. The greatest impact of this flaw is to availability, with some
 potential impact to confidentiality and integrity as well. (CVE-2021-3520)

See Also

https://security.alpinelinux.org/vuln/CVE-2021-3520

Plugin Details

Severity: Critical

ID: 424159

Version: Revision 1.9

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: 4.9

Percentile: 57.58

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 5.5

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

CVSS Score Source: CVE-2021-3520

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.5

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

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

Vulnerability Information

Exploit Ease: No known exploits are available

Vulnerability Publication Date: 6/2/2021

Reference Information

CVE: CVE-2021-3520