Mozilla Firefox up to 48 Same Origin Policy access control

CVSS Meta Temp Score
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CTI Interest Score
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A vulnerability, which was classified as critical, has been found in Mozilla Firefox up to 48 (Web Browser). This issue affects an unknown functionality of the component Same Origin Policy. The manipulation with an unknown input leads to a access control vulnerability. Using CWE to declare the problem leads to CWE-284. The software does not restrict or incorrectly restricts access to a resource from an unauthorized actor. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

Mozilla Firefox before 49.0 allows remote attackers to bypass the Same Origin Policy via a crafted fragment identifier in the SRC attribute of an IFRAME element, leading to insufficient restrictions on link-color information after a document is resized.

The weakness was presented 09/22/2016 as MFSA2016-85 as not defined advisory (Website). It is possible to read the advisory at The identification of this vulnerability is CVE-2016-5283. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1068 according to MITRE ATT&CK.

The vulnerability scanner Nessus provides a plugin with the ID 93732 (openSUSE Security Update : MozillaFirefox / mozilla-nss (openSUSE-2016-1128)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family SuSE Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 196583 (Ubuntu Security Notification for Firefox Vulnerabilities (USN-3076-1)).

Upgrading to version 49.0 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (93732). See 91866, 91868, 91869 and 91870 for similar entries.






  • open-source

CPE 2.3info

CPE 2.2info


VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.0

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍



VulDB Base Score: 🔍
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VulDB Reliability: 🔍

NVD Base Score: 🔍


Class: Access control
CWE: CWE-284 / CWE-266
ATT&CK: T1068

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍


Nessus ID: 93732
Nessus Name: openSUSE Security Update : MozillaFirefox / mozilla-nss (openSUSE-2016-1128)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 831034
OpenVAS Name: Mozilla Firefox Security Updates( mfsa_2016-85_2016-86 )-MAC OS X
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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


Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Firefox 49.0


06/03/2016 🔍
09/22/2016 +111 days 🔍
09/22/2016 +0 days 🔍
09/23/2016 +1 days 🔍
09/20/2022 +2188 days 🔍



Advisory: MFSA2016-85
Status: Not defined

CVE: CVE-2016-5283 (🔍)
SecurityTracker: 1036852
SecurityFocus: 93052

See also: 🔍


Created: 09/23/2016 09:24 AM
Updated: 09/20/2022 09:09 AM
Changes: 09/23/2016 09:24 AM (42), 01/31/2018 09:55 AM (20), 09/20/2022 09:09 AM (4)
Complete: 🔍


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