Mozilla Firefox 43 on Android Lightweight Theme cryptographic issue

CVSS Meta Temp Score
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CTI Interest Score
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7.4$0-$5k0.00

Summaryinfo

A vulnerability classified as critical has been found in Mozilla Firefox 43 on Android. Affected is an unknown function of the component Lightweight Theme Handler. This manipulation causes cryptographic issue. This vulnerability is registered as CVE-2016-1948. Remote exploitation of the attack is possible. No exploit is available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability classified as very critical was found in Mozilla Firefox 43 on Android (Web Browser). Affected by this vulnerability is some unknown processing of the component Lightweight Theme Handler. The manipulation with an unknown input leads to a cryptographic issue vulnerability. The CWE definition for the vulnerability is CWE-310. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

Mozilla Firefox before 44.0 on Android does not ensure that HTTPS is used for a lightweight-theme installation, which allows man-in-the-middle attackers to replace a theme s images and colors by modifying the client-server data stream.

The weakness was published 01/26/2016 by Margaret Leibovic as MFSA2016-12 as confirmed security advisory (Website). It is possible to read the advisory at mozilla.org. This vulnerability is known as CVE-2016-1948 since 01/19/2016. The exploitation appears to be difficult. The attack can be launched remotely. The exploitation doesn't need any form of authentication. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 07/06/2022). The attack technique deployed by this issue is T1600 according to MITRE ATT&CK. The advisory points out:

Mozilla developer Margaret Leibovic reported when Firefox for Android installs lightweight themes, it does not check to verify that they are served over an HTTPS connection. Instead, themes can be installed over an unencrypted connection, which could allow for a man-in-the-middle (MITM) attack by third parties replacing the theme content, which consists of images and toolbar text colors.

The vulnerability scanner Nessus provides a plugin with the ID 91379 (GLSA-201605-06 : Mozilla Products: Multiple vulnerabilities (Logjam) (SLOTH)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Gentoo Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 124615 (Mozilla Firefox Multiple Vulnerabilities (MFSA 2016-01 to MFSA 2016-12)).

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 (91379) and Vulnerability Center (SBV-56225†). Additional details are provided at bugzilla.mozilla.org. Similar entries are available at VDB-80691, VDB-80688, VDB-92777 and VDB-92778. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.7
VulDB Meta Temp Score: 7.4

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

NVD Base Score: 5.3
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: 91379
Nessus Name: GLSA-201605-06 : Mozilla Products: Multiple vulnerabilities (Logjam) (SLOTH)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

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 🔍
05/31/2016 +120 days 🔍
07/06/2022 +2227 days 🔍

Sourcesinfo

Vendor: mozilla.org
Product: mozilla.org

Advisory: MFSA2016-12
Researcher: Margaret Leibovic
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2016-1948 (🔍)
GCVE (CVE): GCVE-0-2016-1948
GCVE (VulDB): GCVE-100-80695
SecurityTracker: 1034825
Vulnerability Center: 56225 - Mozilla Firefox <44 on Android Remote Spoofing Vulnerability due to Lightweight Themes download, Low

scip Labs: https://www.scip.ch/en/?labs.20130704
Misc.: 🔍
See also: 🔍

Entryinfo

Created: 01/27/2016 13:43
Updated: 07/06/2022 13:08
Changes: 01/27/2016 13:43 (64), 07/23/2018 07:56 (20), 07/06/2022 13:08 (3)
Complete: 🔍
Cache ID: 216:E70:103

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