Executive Summary

Informations
Name CVE-2021-43531 First vendor Publication 2021-12-08
Vendor Cve Last vendor Modification 2021-12-10

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
Overall CVSS Score 4.3
Base Score 4.3 Environmental Score 4.3
impact SubScore 1.4 Temporal Score 4.3
Exploitabality Sub Score 2.8
 
Attack Vector Network Attack Complexity Low
Privileges Required None User Interaction Required
Scope Unchanged Confidentiality Impact Low
Integrity Impact None Availability Impact None
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:M/Au:N/C:P/I:N/A:N)
Cvss Base Score 4.3 Attack Range Network
Cvss Impact Score 2.9 Attack Complexity Medium
Cvss Expoit Score 8.6 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

When a user loaded a Web Extensions context menu, the Web Extension could access the post-redirect URL of the element clicked. If the Web Extension lacked the WebRequest permission for the hosts involved in the redirect, this would be a same-origin-violation leaking data the Web Extension should have access to. This was fixed to provide the pre-redirect URL. This is related to CVE-2021-43532 but in the context of Web Extensions. This vulnerability affects Firefox < 94.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-43531

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-346 Origin Validation Error

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 544

Sources (Detail)

Source Url
MISC https://bugzilla.mozilla.org/show_bug.cgi?id=1659155
https://www.mozilla.org/security/advisories/mfsa2021-48/

Alert History

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Date Informations
2024-02-10 02:21:56
  • Multiple Updates
2024-02-02 02:29:33
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2024-02-01 12:25:05
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2023-09-05 13:23:57
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2023-09-05 01:24:34
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2023-09-02 13:22:22
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2023-09-02 01:24:57
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2023-08-12 13:28:21
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2023-08-12 01:24:11
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2023-08-11 13:20:34
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2023-08-11 01:24:59
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2023-08-06 13:18:30
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2023-08-06 01:23:54
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2023-08-04 13:18:52
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2023-08-04 01:24:16
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2023-07-14 13:18:56
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2023-07-14 01:24:03
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2023-04-01 02:09:14
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2023-03-29 02:20:56
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2023-03-28 12:24:14
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2022-10-11 13:10:17
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2022-10-11 01:23:39
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2021-12-10 21:22:58
  • Multiple Updates
2021-12-09 09:22:59
  • Multiple Updates
2021-12-09 00:22:54
  • First insertion