CVE-2021-20285

medium
New! CVE Severity Now Using CVSS v3

The calculated severity for CVEs has been updated to use CVSS v3 by default. CVEs that do not have a CVSS v3 score will fall back CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.

Description

A flaw was found in upx canPack in p_lx_elf.cpp in UPX 3.96. This flaw allows attackers to cause a denial of service (SEGV or buffer overflow and application crash) or possibly have unspecified other impacts via a crafted ELF. The highest threat from this vulnerability is to system availability.

References

https://bugzilla.redhat.com/show_bug.cgi?id=1937787

https://github.com/upx/upx/issues/421

Details

Source: MITRE

Published: 2021-03-26

Updated: 2021-03-29

Type: CWE-119

Risk Information

CVSS v2

Base Score: 8.3

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

Impact Score: 8.5

Exploitability Score: 8.6

Severity: HIGH

CVSS v3

Base Score: 6.6

Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H

Impact Score: 4.7

Exploitability Score: 1.8

Severity: MEDIUM

Vulnerable Software

Configuration 1

OR

cpe:2.3:a:upx_project:upx:3.96:*:*:*:*:*:*:*

Tenable Plugins

View all (2 total)

IDNameProductFamilySeverity
147945Fedora 33 : upx (2021-4b43992608)NessusFedora Local Security Checks
medium
147942Fedora 32 : upx (2021-dff7e97510)NessusFedora Local Security Checks
medium