Mozilla Firefox up to 49.0.1 SwapArrayElements use after free

CVSS Meta Temp Score
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CTI Interest Score
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7.9$0-$5k0.00

Summaryinfo

A vulnerability was found in Mozilla Firefox up to 49.0.1. It has been rated as critical. Affected is the function nsTArray_base::SwapArrayElements. This manipulation causes use after free. This vulnerability is tracked as CVE-2016-5287. The attack is possible to be carried out remotely. No exploit exists. Upgrading the affected component is advised.

Detailsinfo

A vulnerability has been found in Mozilla Firefox up to 49.0.1 (Web Browser) and classified as critical. Affected by this vulnerability is the function nsTArray_base::SwapArrayElements. 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 summary by CVE is:

A potentially exploitable use-after-free crash during actor destruction with service workers. This issue does not affect releases earlier than Firefox 49. This vulnerability affects Firefox < 49.0.2.

The weakness was disclosed 10/21/2016 as MFSA 2016-87 as confirmed security advisory (Website). The advisory is shared at mozilla.org. This vulnerability is known as CVE-2016-5287. The attack can be launched remotely. The exploitation doesn't need any form of authentication. It demands that the victim is doing some kind of user interaction. Technical details are known, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 94593 (Fedora 24 : firefox (2016-fa03795843)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Fedora Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 276249 (Fedora Security Update for firefox (FEDORA-2016-946a184222)).

Upgrading to version 49.0.2 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 (94593), SecurityFocus (BID 93811†) and SecurityTracker (ID 1037077†). The entry VDB-93038 is pretty similar. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.0
VulDB Meta Temp Score: 7.9

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

NVD Base Score: 9.8
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

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: 94593
Nessus Name: Fedora 24 : firefox (2016-fa03795843)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 867773
OpenVAS Name: Fedora Update for firefox FEDORA-2016-fa03795843
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 49.0.2

Timelineinfo

06/03/2016 🔍
10/21/2016 +140 days 🔍
10/21/2016 +0 days 🔍
10/21/2016 +0 days 🔍
10/22/2016 +1 days 🔍
06/11/2018 +596 days 🔍
09/28/2022 +1570 days 🔍

Sourcesinfo

Vendor: mozilla.org
Product: mozilla.org

Advisory: MFSA 2016-87
Status: Confirmed

CVE: CVE-2016-5287 (🔍)
GCVE (CVE): GCVE-0-2016-5287
GCVE (VulDB): GCVE-100-93037
SecurityFocus: 93811
SecurityTracker: 1037077 - Mozilla Firefox Use-After Free Memory Error in nsTArray_base::SwapArrayElements Lets Remote Users Execute Arbitrary Code and Web Cache Bug Lets Remote Users View Potentially Sensitive Information

See also: 🔍

Entryinfo

Created: 10/22/2016 11:43
Updated: 09/28/2022 09:30
Changes: 10/22/2016 11:43 (46), 01/31/2018 09:56 (23), 09/28/2022 09:24 (2), 09/28/2022 09:25 (11), 09/28/2022 09:30 (1)
Complete: 🔍
Cache ID: 216:CC2:103

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