// For flags

CVE-2015-4521

Mozilla: Vulnerabilities found through code inspection (MFSA 2015-112)

Severity Score

8.8
*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

The ConvertDialogOptions function in Mozilla Firefox before 41.0 and Firefox ESR 38.x before 38.3 might allow remote attackers to cause a denial of service (memory corruption and application crash) or possibly have unspecified other impact via unknown vectors.

Vulnerabilidad en la función ConvertDialogOptions en Mozilla Firefox en versiones anteriores a 41.0 y Firefox ESR 38.x en versiones anteriores a 38.3, podría permitir a atacantes remotos provocar una denegación de servicio (corrupción de memoria y caída de la aplicación) o posiblemente tener un impacto no especificado a través de vectores desconocidos.

Andrew Osmond, Olli Pettay, Andrew Sutherland, Christian Holler, David Major, Andrew McCreight, and Cameron McCormack discovered multiple memory safety issues in Thunderbird. If a user were tricked in to opening a specially crafted message, an attacker could potentially exploit these to cause a denial of service via application crash, or execute arbitrary code with the privileges of the user invoking Thunderbird. Khalil Zhani discovered a buffer overflow when parsing VP9 content in some circumstances. If a user were tricked in to opening a specially crafted message, an attacker could potentially exploit this to cause a denial of service via application crash, or execute arbitrary code with the privileges of the user invoking Thunderbird. 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
Low
Authentication
None
Confidentiality
Partial
Integrity
Partial
Availability
Partial
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
  • 2015-06-10 CVE Reserved
  • 2015-09-23 CVE Published
  • 2024-08-06 CVE Updated
  • 2025-04-21 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer
  • CWE-250: Execution with Unnecessary Privileges
CAPEC
References (22)
URL Date SRC
URL Date SRC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Mozilla
Search vendor "Mozilla"
Firefox
Search vendor "Mozilla" for product "Firefox"
<= 40.0.3
Search vendor "Mozilla" for product "Firefox" and version " <= 40.0.3"
-
Affected
Mozilla
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Firefox Esr
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38.0
Search vendor "Mozilla" for product "Firefox Esr" and version "38.0"
-
Affected
Mozilla
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Firefox Esr
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38.0.1
Search vendor "Mozilla" for product "Firefox Esr" and version "38.0.1"
-
Affected
Mozilla
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Firefox Esr
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38.0.5
Search vendor "Mozilla" for product "Firefox Esr" and version "38.0.5"
-
Affected
Mozilla
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Firefox Esr
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38.1.0
Search vendor "Mozilla" for product "Firefox Esr" and version "38.1.0"
-
Affected
Mozilla
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Firefox Esr
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38.1.1
Search vendor "Mozilla" for product "Firefox Esr" and version "38.1.1"
-
Affected
Mozilla
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Firefox Esr
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38.2.0
Search vendor "Mozilla" for product "Firefox Esr" and version "38.2.0"
-
Affected
Mozilla
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Firefox Esr
Search vendor "Mozilla" for product "Firefox Esr"
38.2.1
Search vendor "Mozilla" for product "Firefox Esr" and version "38.2.1"
-
Affected