Executive Summary

Informations
Name CVE-2021-23991 First vendor Publication 2021-06-24
Vendor Cve Last vendor Modification 2024-11-21

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N
Overall CVSS Score 6.8
Base Score 6.8 Environmental Score 6.8
impact SubScore 5.2 Temporal Score 6.8
Exploitabality Sub Score 1.6
 
Attack Vector Network Attack Complexity High
Privileges Required None User Interaction Required
Scope Unchanged Confidentiality Impact High
Integrity Impact High Availability Impact None
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:H/Au:N/C:P/I:P/A:N)
Cvss Base Score 4 Attack Range Network
Cvss Impact Score 4.9 Attack Complexity High
Cvss Expoit Score 4.9 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

If a Thunderbird user has previously imported Alice's OpenPGP key, and Alice has extended the validity period of her key, but Alice's updated key has not yet been imported, an attacker may send an email containing a crafted version of Alice's key with an invalid subkey, Thunderbird might subsequently attempt to use the invalid subkey, and will fail to send encrypted email to Alice. This vulnerability affects Thunderbird < 78.9.1.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-23991

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 419

Sources (Detail)

https://bugzilla.mozilla.org/show_bug.cgi?id=1673240
https://www.mozilla.org/security/advisories/mfsa2021-13/
Source Url

Alert History

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Date Informations
2025-02-07 02:27:54
  • Multiple Updates
2024-11-28 13:53:31
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2024-08-02 13:22:52
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2024-08-02 01:24:48
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2024-02-02 02:23:12
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2024-02-01 12:23:09
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2023-09-05 13:17:31
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2023-09-05 01:22:42
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2023-09-02 13:16:10
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2023-09-02 01:23:02
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2023-08-12 13:22:10
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2023-08-12 01:22:15
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2023-08-11 13:14:35
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2023-08-11 01:22:57
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2023-08-06 13:12:38
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2023-08-06 01:21:59
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2023-08-04 13:13:00
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2023-08-04 01:22:20
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2023-07-14 13:13:02
  • Multiple Updates
2023-07-14 01:22:09
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2023-03-29 02:15:20
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2023-03-28 12:22:24
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2022-10-11 13:05:16
  • Multiple Updates
2022-10-11 01:21:56
  • Multiple Updates
2021-07-08 21:23:16
  • Multiple Updates
2021-06-24 21:23:09
  • First insertion