// For flags

CVE-2016-5258

Mozilla: Use-after-free in DTLS during WebRTC session shutdown (MFSA 2016-72)

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 WebRTC socket thread in Mozilla Firefox before 48.0 and Firefox ESR 45.x before 45.3 allows remote attackers to execute arbitrary code by leveraging incorrect free operations on DTLS objects during the shutdown of a WebRTC session.

Vulnerabilidad de uso después de liberación de memoria en el hilo de toma WebRTC 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 aprovechando operaciones incorrectas gratuitas en objetos DTLS durante la desconexión de una sesión WebRTC.

Gustavo Grieco discovered an out-of-bounds read during XML parsing in some circumstances. If a user were tricked in to opening a specially crafted website, an attacker could potentially exploit this to cause a denial of service via application crash, or obtain sensitive information. Toni Huttunen discovered that once a favicon is requested from a site, the remote server can keep the network connection open even after the page is closed. A remote attacker could potentially exploit this to track users, resulting in information disclosure. Various other issues were also addressed.

*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
  • 2024-08-06 CVE Updated
  • 2024-08-06 First Exploit
  • 2025-03-30 EPSS Updated
  • ---------- 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
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
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