Mozilla Firefox 43 ssl3_HandleECDHServerKeyExchange 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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7.5$0-$5k0.00

Summaryinfo

A vulnerability classified as critical was found in Mozilla Firefox 43. This impacts the function ssl3_HandleECDHServerKeyExchange. Such manipulation leads to use after free. This vulnerability is referenced as CVE-2016-1978. It is possible to launch the attack remotely. No exploit is available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Mozilla Firefox 43 (Web Browser). Affected by this issue is the function ssl3_HandleECDHServerKeyExchange. The manipulation with an unknown input leads to a use after free vulnerability. Using CWE to declare the problem leads to CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. Impacted is confidentiality, integrity, and availability.

The weakness was published 03/08/2016 by Eric Rescorla as MFSA 2016-15 as confirmed security advisory (Website). The advisory is shared for download at developer.mozilla.org. This vulnerability is handled as CVE-2016-1978 since 01/20/2016. 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 known technical details, but no exploit is 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 196478 (Ubuntu Security Notification for Thunderbird Vulnerabilities (USN-2973-1)).

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 (111321), Tenable (90367), SecurityFocus (BID 84275†) and Vulnerability Center (SBV-57172†). Similar entries are available at VDB-81240 and VDB-82969. 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: 8.1
VulDB Meta Temp Score: 7.5

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

NVD Base Score: 7.3
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: 803852
OpenVAS Name: Mozilla Firefox Multiple Vulnerabilities - Jan16 (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 🔍
01/25/2016 +5 days 🔍
03/07/2016 +42 days 🔍
03/08/2016 +0 days 🔍
03/08/2016 +0 days 🔍
03/08/2016 +0 days 🔍
03/09/2016 +1 days 🔍
03/13/2016 +3 days 🔍
04/07/2016 +24 days 🔍
07/09/2022 +2284 days 🔍

Sourcesinfo

Vendor: mozilla.org
Product: mozilla.org

Advisory: MFSA 2016-15
Researcher: Eric Rescorla
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2016-1978 (🔍)
GCVE (CVE): GCVE-0-2016-1978
GCVE (VulDB): GCVE-100-81200

OVAL: 🔍

X-Force: 111321 - Mozilla Firefox ssl3_HandleECDHServerKeyExchange code execution
SecurityFocus: 84275 - Mozilla Network Security Services Use After Free CVE-2016-1978 Remote Code Execution Vulnerability
SecurityTracker: 1035258
Vulnerability Center: 57172 - Mozilla NSS < 3.21 Remote Code Execution due to Use-After-Free during SSL Connections in Low Memory, Medium

See also: 🔍

Entryinfo

Created: 03/08/2016 22:34
Updated: 07/09/2022 10:53
Changes: 03/08/2016 22:34 (75), 09/02/2018 10:39 (14), 07/09/2022 10:53 (4)
Complete: 🔍
Cache ID: 216::103

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