// For flags

CVE-2016-5259

Mozilla: Use-after-free in service workers with nested sync events (MFSA 2016-73)

Severity Score

8.8
*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

1
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

Use-after-free vulnerability in the CanonicalizeXPCOMParticipant function in Mozilla Firefox before 48.0 and Firefox ESR 45.x before 45.3 allows remote attackers to execute arbitrary code via a script that closes its own Service Worker within a nested sync event loop.

Vulnerabilidad de uso después de liberación de memoria en la función CanonicalizeXPCOMParticipant en Mozilla Firefox en versiones anteriores a 48.0 y Firefox ESR 45.x en versiones anteriores a 45.3 permite a atacantes remotos ejecutar código arbitrario a través de una secuencia de comandos que cierra su propio Service Worker dentro de un bloque de eventos sync anidados.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Network
Attack Complexity
Medium
Authentication
None
Confidentiality
Partial
Integrity
Partial
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2016-06-03 CVE Reserved
  • 2016-08-03 CVE Published
  • 2024-05-28 EPSS Updated
  • 2024-08-06 CVE Updated
  • 2024-08-06 First Exploit
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
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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<= 47.0.1
Search vendor "Mozilla" for product "Firefox" and version " <= 47.0.1"
-
Affected
Mozilla
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Firefox Esr
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45.1.0
Search vendor "Mozilla" for product "Firefox Esr" and version "45.1.0"
-
Affected
Mozilla
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Firefox Esr
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45.1.1
Search vendor "Mozilla" for product "Firefox Esr" and version "45.1.1"
-
Affected
Mozilla
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Firefox Esr
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45.2.0
Search vendor "Mozilla" for product "Firefox Esr" and version "45.2.0"
-
Affected
Mozilla
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Firefox Esr
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45.3.0
Search vendor "Mozilla" for product "Firefox Esr" and version "45.3.0"
-
Affected
Oracle
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Linux
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5.0
Search vendor "Oracle" for product "Linux" and version "5.0"
-
Affected
Oracle
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Linux
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6
Search vendor "Oracle" for product "Linux" and version "6"
-
Affected
Oracle
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Linux
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7
Search vendor "Oracle" for product "Linux" and version "7"
-
Affected