Executive Summary

Informations
Name CVE-2020-6840 First vendor Publication 2020-01-11
Vendor Cve Last vendor Modification 2024-11-21

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Overall CVSS Score 9.8
Base Score 9.8 Environmental Score 9.8
impact SubScore 5.9 Temporal Score 9.8
Exploitabality Sub Score 3.9
 
Attack Vector Network Attack Complexity Low
Privileges Required None User Interaction None
Scope Unchanged Confidentiality Impact High
Integrity Impact High Availability Impact High
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:L/Au:N/C:P/I:P/A:P)
Cvss Base Score 7.5 Attack Range Network
Cvss Impact Score 6.4 Attack Complexity Low
Cvss Expoit Score 10 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

In mruby 2.1.0, there is a use-after-free in hash_slice in mrbgems/mruby-hash-ext/src/hash-ext.c.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-6840

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-416 Use After Free

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 1

Sources (Detail)

https://github.com/mruby/mruby/issues/4927
Source Url

Alert History

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Date Informations
2025-07-15 01:37:36
  • Multiple Updates
2025-07-14 12:11:40
  • Multiple Updates
2025-06-26 01:36:51
  • Multiple Updates
2025-06-25 12:11:33
  • Multiple Updates
2025-03-29 02:41:04
  • Multiple Updates
2025-03-28 13:22:52
  • Multiple Updates
2024-11-28 13:47:48
  • Multiple Updates
2021-05-04 13:53:26
  • Multiple Updates
2021-04-22 03:04:21
  • Multiple Updates
2020-05-23 02:40:26
  • First insertion