// For flags

CVE-2023-6205

Mozilla: Use-after-free in MessagePort::Entangled

Severity Score

6.5
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

It was possible to cause the use of a MessagePort after it had already been freed, which could potentially have led to an exploitable crash. This vulnerability affects Firefox < 120, Firefox ESR < 115.5.0, and Thunderbird < 115.5.

Era posible provocar el uso de un MessagePort después de que ya se había liberado, lo que podría haber provocado un fallo explotable. Esta vulnerabilidad afecta a Firefox &lt; 120, Firefox &lt; 115.5 y Thunderbird &lt; 115.5.0.

The Mozilla Foundation Security Advisory describes this flaw as:

It was possible to cause the use of a MessagePort after it had already
been freed, which could potentially have led to an exploitable crash.

*Credits: Yangkang of 360 ATA Team
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2023-11-20 CVE Reserved
  • 2023-11-21 CVE Published
  • 2024-08-02 CVE Updated
  • 2024-10-21 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-416: Use After Free
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Mozilla
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Firefox
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< 120.0
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-
Affected
Mozilla
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Firefox Esr
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< 115.5.0
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-
Affected
Mozilla
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Thunderbird
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< 115.5
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-
Affected
Debian
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Debian Linux
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10.0
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-
Affected
Debian
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Debian Linux
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11.0
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-
Affected
Debian
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Debian Linux
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12.0
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-
Affected