Mozilla Firefox 43 NSS mp_div/mp_exptmod cryptographic issue

CVSS Meta Temp Score
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CTI Interest Score
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8.0$0-$5k0.00

Summaryinfo

A vulnerability categorized as critical has been discovered in Mozilla Firefox 43. Impacted is the function mp_div/mp_exptmod of the component NSS. Such manipulation leads to cryptographic issue. This vulnerability is referenced as CVE-2016-1938. It is possible to launch the attack remotely. No exploit is available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in Mozilla Firefox 43 (Web Browser) and classified as very critical. Affected by this issue is the function mp_div/mp_exptmod of the component NSS. The manipulation with an unknown input leads to a cryptographic issue vulnerability. Using CWE to declare the problem leads to CWE-310. Impacted is confidentiality, integrity, and availability.

The weakness was published 01/26/2016 by Hanno Böck with Oracle as MFSA2016-07 as confirmed security advisory (Website). The advisory is available at mozilla.org. This vulnerability is handled as CVE-2016-1938 since 01/19/2016. The exploitation is known to be difficult. The attack may be launched remotely. No form of authentication is required for exploitation. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 07/06/2022). This vulnerability is assigned to T1600 by the MITRE ATT&CK project. The advisory points out:

Security researcher Hanno Böck reported that calculations with mp_div and mp_exptmod in Network Security Services (NSS) can produce wrong results in some circumstances. These functions are used within NSS for a variety of cryptographic division functions, leading to potential cryptographic weaknesses.

The vulnerability scanner Nessus provides a plugin with the ID 88512 (FreeBSD : mozilla -- multiple vulnerabilities (4f00dac0-1e18-4481-95af-7aaad63fd303)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family FreeBSD Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 175857 (Debian Security Update for nss (DSA 3688-1)).

Upgrading to version 44 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 (88512), SecurityFocus (BID 91787†) and Vulnerability Center (SBV-56217†). bugzilla.mozilla.org is providing further details. Similar entries are available at VDB-76354, VDB-78584, VDB-78603 and VDB-78601. If you want to get best quality of vulnerability data, you may have to visit VulDB.

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.3
VulDB Meta Temp Score: 8.0

VulDB Base Score: 10.0
VulDB Temp Score: 9.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.5
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Cryptographic issue
CWE: CWE-310
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: 88512
Nessus Name: FreeBSD : mozilla -- multiple vulnerabilities (4f00dac0-1e18-4481-95af-7aaad63fd303)
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: 🔍

Upgrade: Firefox 44

Timelineinfo

01/19/2016 🔍
01/25/2016 +6 days 🔍
01/26/2016 +0 days 🔍
01/26/2016 +0 days 🔍
01/26/2016 +0 days 🔍
01/27/2016 +0 days 🔍
01/31/2016 +4 days 🔍
02/01/2016 +1 days 🔍
07/15/2016 +164 days 🔍
07/06/2022 +2182 days 🔍

Sourcesinfo

Vendor: mozilla.org
Product: mozilla.org

Advisory: MFSA2016-07
Researcher: Hanno Böck
Organization: Oracle
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2016-1938 (🔍)
GCVE (CVE): GCVE-0-2016-1938
GCVE (VulDB): GCVE-100-80690

OVAL: 🔍

SecurityFocus: 91787 - Oracle July 2016 Critical Patch Update Multiple Vulnerabilities
SecurityTracker: 1034825
Vulnerability Center: 56217 - Mozilla Firefox <44 Remote Unspecified Vulnerability due to Issue in NSS, High

Misc.: 🔍
See also: 🔍

Entryinfo

Created: 01/27/2016 13:43
Updated: 07/06/2022 12:30
Changes: 01/27/2016 13:43 (72), 07/23/2018 07:54 (21), 07/06/2022 12:30 (4)
Complete: 🔍
Cache ID: 216:32C:103

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