Mozilla Firefox 45 multipart/x-mixed-replace MIME Type Content Security Policy access control

CVSS Meta Temp Score
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CTI Interest Score
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7.1$0-$5k0.00

Summaryinfo

A vulnerability described as critical has been identified in Mozilla Firefox 45. This vulnerability affects unknown code of the component multipart/x-mixed-replace MIME Type Handler. Such manipulation leads to access control (Content Security Policy). This vulnerability is documented as CVE-2016-2816. The attack can be executed remotely. There is not any exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in Mozilla Firefox 45 (Web Browser) and classified as critical. Affected by this issue is an unknown code block of the component multipart/x-mixed-replace MIME Type Handler. The manipulation with an unknown input leads to a access control vulnerability (Content Security Policy). Using CWE to declare the problem leads to CWE-284. The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. Impacted is confidentiality, integrity, and availability. CVE summarizes:

Mozilla Firefox before 46.0 allows remote attackers to bypass the Content Security Policy (CSP) protection mechanism via the multipart/x-mixed-replace content type.

The weakness was released 04/26/2016 as MFSA 2016-45 as confirmed security advisory (Website). The advisory is shared for download at mozilla.org. This vulnerability is handled as CVE-2016-2816 since 03/01/2016. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1068.

The vulnerability scanner Nessus provides a plugin with the ID 91255 (Ubuntu 12.04 LTS / 14.04 LTS / 15.10 / 16.04 LTS : firefox regression (USN-2936-3)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Ubuntu Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 196461 (Ubuntu Security Notification for Firefox Vulnerabilities (USN-2936-1)).

Upgrading eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (112661) and Tenable (91255). Entries connected to this vulnerability are available at VDB-82967, VDB-82968, VDB-82970 and VDB-82971. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.7
VulDB Meta Temp Score: 7.1

VulDB Base Score: 8.8
VulDB Temp Score: 7.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.5
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Name: Content Security Policy
Class: Access control / Content Security Policy
CWE: CWE-284 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Unproven

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 91255
Nessus Name: Ubuntu 12.04 LTS / 14.04 LTS / 15.10 / 16.04 LTS : firefox regression (USN-2936-3)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 862675
OpenVAS Name: Mozilla Firefox Security Updates( mfsa_2016-39_2016-48 )-Windows
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Timelineinfo

03/01/2016 🔍
04/26/2016 +56 days 🔍
04/26/2016 +0 days 🔍
04/28/2016 +2 days 🔍
04/30/2016 +2 days 🔍
05/19/2016 +18 days 🔍
07/27/2022 +2260 days 🔍

Sourcesinfo

Vendor: mozilla.org
Product: mozilla.org

Advisory: MFSA 2016-45
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2016-2816 (🔍)
GCVE (CVE): GCVE-0-2016-2816
GCVE (VulDB): GCVE-100-82976
X-Force: 112661 - Mozilla Firefox Content Security Policy security bypass
SecurityTracker: 1035692

See also: 🔍

Entryinfo

Created: 04/28/2016 10:44
Updated: 07/27/2022 09:14
Changes: 04/28/2016 10:44 (64), 10/29/2018 06:13 (15), 07/27/2022 09:14 (3)
Complete: 🔍
Cache ID: 216:351:103

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