Mozilla Firefox 44 Network Security Services DER Encoded Key use after free

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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8.2$0-$5k0.00

Summaryinfo

A vulnerability described as critical has been identified in Mozilla Firefox 44. Impacted is an unknown function of the component Network Security Services. The manipulation as part of DER Encoded Key results in use after free. This vulnerability is known as CVE-2016-1979. It is possible to launch the attack remotely. No exploit is available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in Mozilla Firefox 44 (Web Browser). It has been classified as critical. Affected is an unknown code block of the component Network Security Services. The manipulation as part of a DER Encoded Key leads to a use after free vulnerability. CWE is classifying the issue as CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. This is going to have an impact on confidentiality, integrity, and availability.

The weakness was published 03/08/2016 as MFSA 2016-36 as confirmed security advisory (Website). The advisory is shared for download at mozilla.org. This vulnerability is traded as CVE-2016-1979 since 01/20/2016. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 07/09/2022).

The vulnerability scanner Nessus provides a plugin with the ID 90367 (CentOS 6 : nspr / nss / nss-util (CESA-2016:0591)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CentOS Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 124947 (Red Hat Update for nss and nspr security (RHSA-2016:0684)).

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 (111365), Tenable (90367), SecurityFocus (BID 84221†) and Vulnerability Center (SBV-57147†). Similar entry is available at VDB-81200. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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Vendor

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Version

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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: 8.2

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

NVD Base Score: 8.8
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: Unproven

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 90367
Nessus Name: CentOS 6 : nspr / nss / nss-util (CESA-2016:0591)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 802891
OpenVAS Name: Mozilla Firefox Multiple Vulnerabilities - Mar16 (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

01/20/2016 🔍
03/07/2016 +47 days 🔍
03/07/2016 +0 days 🔍
03/08/2016 +0 days 🔍
03/08/2016 +0 days 🔍
03/08/2016 +0 days 🔍
03/09/2016 +0 days 🔍
03/13/2016 +4 days 🔍
04/07/2016 +24 days 🔍
07/09/2022 +2284 days 🔍

Sourcesinfo

Vendor: mozilla.org
Product: mozilla.org

Advisory: MFSA 2016-36
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2016-1979 (🔍)
GCVE (CVE): GCVE-0-2016-1979
GCVE (VulDB): GCVE-100-81240

OVAL: 🔍

X-Force: 111365 - Mozilla Firefox DER code execution
SecurityFocus: 84221 - Mozilla Network Security Services Use After Free CVE-2016-1979 Denial of Service Vulnerability
SecurityTracker: 1035215
Vulnerability Center: 57147 - Mozilla NSS < 3.21.1 Remote Use-After-Free Vulnerability in Processing DER Encoded Keys, Critical

See also: 🔍

Entryinfo

Created: 03/09/2016 10:23
Updated: 07/09/2022 14:39
Changes: 03/09/2016 10:23 (70), 09/02/2018 10:31 (19), 07/09/2022 14:39 (4)
Complete: 🔍
Cache ID: 216::103

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