Alpine: multiple upx packages: security update to 4.0.0-r0

high Tenable Cloud Security Plugin ID 427474

Description

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

- Null pointer dereference was found in upx PackLinuxElf::canUnpack() in p_lx_elf.cpp,in version UPX 4.0.0.
That allow attackers to execute arbitrary code and cause a denial of service via a crafted file.
(CVE-2021-30500)

- A heap buffer overflow read was discovered in upx 4.0.0, because the check in p_lx_elf.cpp is not perfect.
(CVE-2020-24119)

- A heap-based buffer over-read was discovered in the invert_pt_dynamic function in p_lx_elf.cpp in UPX
4.0.0 via a crafted Mach-O file. (CVE-2020-27796)

- An invalid memory address reference was discovered in the elf_lookup function in p_lx_elf.cpp in UPX 4.0.0
via a crafted Mach-O file. (CVE-2020-27797)

- An invalid memory address reference was discovered in the adjABS function in p_lx_elf.cpp in UPX 4.0.0 via
a crafted Mach-O file. (CVE-2020-27798)

Plugin Details

Severity: High

ID: 427474

Version: Revision 1.2

Type: Local

Family: Alpine Linux Local Security Checks

Published: 5/16/2025

Updated: 5/30/2025

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

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 57.15

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5.3

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

CVSS Score Source: CVE-2021-30500

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 7

Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/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: 5/14/2021

Reference Information

CVE: CVE-2020-24119, CVE-2020-27796, CVE-2020-27797, CVE-2020-27798, CVE-2020-27799, CVE-2020-27800, CVE-2020-27801, CVE-2020-27802, CVE-2021-30500, CVE-2021-30501

Detections

Analytics