Mozilla Firefox up to 47 Service Worker CanonicalizeXPCOMParticipant use after free

CVSS Meta Temp Score
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CTI Interest Score
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8.6$0-$5k0.00

Summaryinfo

A vulnerability labeled as critical has been found in Mozilla Firefox up to 47. Impacted is the function CanonicalizeXPCOMParticipant of the component Service Worker. Executing a manipulation can lead to use after free. This vulnerability is handled as CVE-2016-5259. The attack can be executed remotely. There is not any exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability has been found in Mozilla Firefox up to 47 (Web Browser) and classified as critical. This vulnerability affects the function CanonicalizeXPCOMParticipant of the component Service Worker. The manipulation with an unknown input leads to a use after free vulnerability. The CWE definition for the vulnerability is CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. As an impact it is known to affect confidentiality, integrity, and availability.

The weakness was released 08/02/2016 by Looben Yang with Zero Day Initiative as MFSA 2016-73 as confirmed security advisory (Website). The advisory is shared for download at mozilla.org. This vulnerability was named CVE-2016-5259 since 06/03/2016. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 09/09/2022). The advisory points out:

Security researcher Looben Yang discovered a use-after-free vulnerability when working with nested sync event loops in Service Workers. He discovered a mechanism where scripts can close their own worker, which will then trigger a synchronization XMLHttpRequest on this now closed and released worker. This results in a potentially exploitable crash when triggered.

The vulnerability scanner Nessus provides a plugin with the ID 92785 (Ubuntu 12.04 LTS / 14.04 LTS / 16.04 LTS : firefox vulnerabilities (USN-3044-1)), 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 157233 (Oracle Enterprise Linux Security Update for firefox (ELSA-2016-1551)).

Upgrading to version 48 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 Tenable (92785), SecurityFocus (BID 92258†) and SecurityTracker (ID 1036508†). Entries connected to this vulnerability are available at VDB-90424, VDB-90425, VDB-90426 and VDB-90427. Once again VulDB remains the best source for vulnerability data.

Productinfo

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.8
VulDB Meta Temp Score: 8.6

VulDB Base Score: 8.8
VulDB Temp Score: 8.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.8
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Use after free
CWE: CWE-416 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 92785
Nessus Name: Ubuntu 12.04 LTS / 14.04 LTS / 16.04 LTS : firefox vulnerabilities (USN-3044-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 65178
OpenVAS Name: Mozilla Firefox Esr Security Updates( mfsa_2016-62_2016-84 )-MAC OS X
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: 🔍

Upgrade: Firefox 48

Timelineinfo

06/03/2016 🔍
08/02/2016 +60 days 🔍
08/02/2016 +0 days 🔍
08/02/2016 +0 days 🔍
08/03/2016 +1 days 🔍
08/04/2016 +1 days 🔍
08/04/2016 +0 days 🔍
08/08/2016 +4 days 🔍
09/09/2022 +2223 days 🔍

Sourcesinfo

Vendor: mozilla.org
Product: mozilla.org

Advisory: MFSA 2016-73
Researcher: Looben Yang
Organization: Zero Day Initiative
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2016-5259 (🔍)
GCVE (CVE): GCVE-0-2016-5259
GCVE (VulDB): GCVE-100-90436

OVAL: 🔍

SecurityFocus: 92258 - Mozilla Firefox Multiple Security Vulnerabilities
SecurityTracker: 1036508

See also: 🔍

Entryinfo

Created: 08/04/2016 09:21
Updated: 09/09/2022 17:33
Changes: 08/04/2016 09:21 (76), 03/16/2019 21:24 (13), 09/09/2022 17:33 (3)
Complete: 🔍
Cache ID: 216:D64:103

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