Executive Summary



This Alert is flagged as TOP 25 Common Weakness Enumeration from CWE/SANS. For more information, you can read this.
Informations
Name CVE-2021-20285 First vendor Publication 2021-03-26
Vendor Cve Last vendor Modification 2025-04-11

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H
Overall CVSS Score 6.6
Base Score 6.6 Environmental Score 6.6
impact SubScore 4.7 Temporal Score 6.6
Exploitabality Sub Score 1.8
 
Attack Vector Local Attack Complexity Low
Privileges Required None User Interaction Required
Scope Unchanged Confidentiality Impact Low
Integrity Impact Low Availability Impact High
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:M/Au:N/C:P/I:P/A:C)
Cvss Base Score 8.3 Attack Range Network
Cvss Impact Score 8.5 Attack Complexity Medium
Cvss Expoit Score 8.6 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

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.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-20285

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-787 Out-of-bounds Write (CWE/SANS Top 25)

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 1

Sources (Detail)

https://bugzilla.redhat.com/show_bug.cgi?id=1937787
https://github.com/upx/upx/issues/421
Source Url

Alert History

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Date Informations
2025-05-27 01:37:49
  • Multiple Updates
2024-11-28 13:50:42
  • Multiple Updates
2022-08-05 21:27:40
  • Multiple Updates
2021-05-04 14:08:54
  • Multiple Updates
2021-04-22 03:13:35
  • Multiple Updates
2021-03-29 21:23:13
  • Multiple Updates
2021-03-26 21:23:13
  • First insertion