Executive Summary

Informations
Name CVE-2020-6819 First vendor Publication 2020-04-24
Vendor Cve Last vendor Modification 2020-05-01

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Overall CVSS Score 8.1
Base Score 8.1 Environmental Score 8.1
impact SubScore 5.9 Temporal Score 8.1
Exploitabality Sub Score 2.2
 
Attack Vector Network Attack Complexity High
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:M/Au:N/C:P/I:P/A:P)
Cvss Base Score 6.8 Attack Range Network
Cvss Impact Score 6.4 Attack Complexity Medium
Cvss Expoit Score 8.6 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

Under certain conditions, when running the nsDocShell destructor, a race condition can cause a use-after-free. We are aware of targeted attacks in the wild abusing this flaw. This vulnerability affects Thunderbird < 68.7.0, Firefox < 74.0.1, and Firefox ESR < 68.6.1.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-6819

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-416 Use After Free

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 538
Application 132
Application 417

Snort® IPS/IDS

Date Description
2020-05-07 Mozilla Firefox potential use after free attempt
RuleID : 53581 - Revision : 1 - Type : BROWSER-FIREFOX
2020-05-07 Mozilla Firefox potential use after free attempt
RuleID : 53580 - Revision : 1 - Type : BROWSER-FIREFOX

Sources (Detail)

Source Url
MISC https://bugzilla.mozilla.org/show_bug.cgi?id=1620818
https://www.mozilla.org/security/advisories/mfsa2020-11/
https://www.mozilla.org/security/advisories/mfsa2020-14/
UBUNTU https://usn.ubuntu.com/4335-1/

Alert History

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0
1
Date Informations
2020-05-29 01:25:55
  • Multiple Updates
2020-05-23 02:40:23
  • First insertion