// For flags

CVE-2024-1936

Mozilla: Leaking of encrypted email subjects to other conversations

Severity Score

7.5
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

Attend
*SSVC
Descriptions

The encrypted subject of an email message could be incorrectly and permanently assigned to an arbitrary other email message in Thunderbird's local cache. Consequently, when replying to the contaminated email message, the user might accidentally leak the confidential subject to a third party. While this update fixes the bug and avoids future message contamination, it does not automatically repair existing contaminations. Users are advised to use the repair folder functionality, which is available from the context menu of email folders, which will erase incorrect subject assignments. This vulnerability affects Thunderbird < 115.8.1.

El asunto cifrado de un mensaje de correo electrónico podría asignarse de forma incorrecta y permanente a otro mensaje de correo electrónico arbitrario en la caché local de Thunderbird. En consecuencia, al responder al mensaje de correo electrónico contaminado, el usuario podría filtrar accidentalmente el asunto confidencial a un tercero. Si bien esta actualización corrige el error y evita la contaminación futura de mensajes, no repara automáticamente las contaminaciones existentes. Se recomienda a los usuarios que utilicen la función de reparación de carpetas, que está disponible en el menú contextual de las carpetas de correo electrónico, que borrará las asignaciones de asuntos incorrectas. Esta vulnerabilidad afecta a Thunderbird &lt; 115.8.1.

The encrypted subject of an email message could be incorrectly and permanently assigned to an arbitrary other email message in Thunderbird's local cache. Consequently, when replying to the contaminated email message, the user might accidentally leak the confidential subject to a third-party. While this update fixes the bug and avoids future message contamination, it does not automatically repair existing contaminations. Users are advised to use the repair folder functionality, which is available from the context menu of email folders, which will erase incorrect subject assignments. This vulnerability affects Thunderbird < 115.8.1.

A flaw was found in Mozilla. The Mozilla Foundation Security Advisory describes this flaw as follows: The encrypted subject of an email message could be incorrectly and permanently assigned to an arbitrary other email message in Thunderbird's local cache. Consequently, when replying to the contaminated email message, the user might accidentally leak the confidential subject to a third party. While this update fixes the bug and avoids future message contamination, it does not automatically repair existing contaminations. Users are advised to use the repair folder functionality, which is available from the context menu of email folders, which will erase incorrect subject assignments.

*Credits: Several community reporters
CVSS Scores
Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Network
Attack Complexity
High
Authentication
None
Confidentiality
Complete
Integrity
Complete
Availability
Complete
* Common Vulnerability Scoring System
SSVC
  • Decision:Attend
Exploitation
Poc
Automatable
No
Tech. Impact
Total
* Organization's Worst-case Scenario
Timeline
  • 2024-02-27 CVE Reserved
  • 2024-03-04 CVE Published
  • 2024-03-24 EPSS Updated
  • 2024-11-26 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-311: Missing Encryption of Sensitive Data
  • CWE-922: Insecure Storage of Sensitive Information
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
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Centos
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Centos
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Affected
Mozilla
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Thunderbird
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Affected
Oracle
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Linux
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Affected
Redhat
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Enterprise Linux
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Affected
Redhat
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Rhel Aus
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Affected
Redhat
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Rhel E4s
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Affected
Redhat
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Rhel Eus
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Affected
Redhat
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Rhel Tus
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Amazon
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Linux
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Centos
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Centos
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Debian
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Debian Linux
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Fedoraproject
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Fedora
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Opensuse
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Leap
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Oracle
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Linux
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Redhat
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Enterprise Linux
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Redhat
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Rhel Aus
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Redhat
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Rhel E4s
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Redhat
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Rhel Eus
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Redhat
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Rhel Tus
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Rocky
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Linux
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Slackware
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Slackware Linux
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Suse
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Packagehub
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Suse
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Sle-we
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Suse
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Sled
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Suse
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Sles
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Suse
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Sles Sap
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Affected