Mozilla Firefox up to 57.x HTML Media use after free

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

Summaryinfo

A vulnerability labeled as problematic has been found in Mozilla Firefox up to 57.x. This impacts an unknown function of the component HTML Media Handler. Executing a manipulation can lead to use after free. This vulnerability appears as CVE-2018-5102. The attack may be performed from remote. There is no available exploit. The affected component should be upgraded.

Detailsinfo

A vulnerability classified as problematic was found in Mozilla Firefox up to 57.x (Web Browser). This vulnerability affects an unknown part of the component HTML Media Handler. 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 availability. CVE summarizes:

A use-after-free vulnerability can occur when manipulating HTML media elements with media streams, resulting in a potentially exploitable crash. This vulnerability affects Thunderbird < 52.6, Firefox ESR < 52.6, and Firefox < 58.

The bug was discovered 01/23/2018. The weakness was presented 01/23/2018 by xisigr with Tencent as MFSA 2018-02 as confirmed security advisory (Website). The advisory is shared for download at mozilla.org. This vulnerability was named CVE-2018-5102 since 01/03/2018. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are neither technical details nor an exploit publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 106790 (Ubuntu 14.04 LTS / 16.04 LTS / 17.10 : firefox regressions (USN-3544-2)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Ubuntu Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 157636 (Oracle Enterprise Linux Security Update for firefox (ELSA-2018-0122)).

Upgrading to version 58.0 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 (106790), SecurityFocus (BID 102783†) and SecurityTracker (ID 1040270†). See VDB-112518, VDB-112519, VDB-112520 and VDB-112521 for similar entries. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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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: 7.6
VulDB Meta Temp Score: 7.4

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

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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: 106790
Nessus Name: Ubuntu 14.04 LTS / 16.04 LTS / 17.10 : firefox regressions (USN-3544-2)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 66413
OpenVAS Name: CentOS Update for firefox CESA-2018:0122 centos6
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 58.0

Timelineinfo

01/03/2018 🔍
01/23/2018 +20 days 🔍
01/23/2018 +0 days 🔍
01/23/2018 +0 days 🔍
01/23/2018 +0 days 🔍
01/24/2018 +1 days 🔍
01/28/2018 +4 days 🔍
02/13/2018 +16 days 🔍
06/11/2018 +117 days 🔍
11/26/2025 +2725 days 🔍

Sourcesinfo

Vendor: mozilla.org
Product: mozilla.org

Advisory: MFSA 2018-02
Researcher: Looben Yang, Nils, and xisigr (xisigr)
Organization: Tencent
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2018-5102 (🔍)
GCVE (CVE): GCVE-0-2018-5102
GCVE (VulDB): GCVE-100-112528

OVAL: 🔍

SecurityFocus: 102783 - Mozilla Firefox and Firefox ESR Multiple Security Vulnerabilities
SecurityTracker: 1040270

See also: 🔍

Entryinfo

Created: 01/28/2018 10:17
Updated: 11/26/2025 06:37
Changes: 01/28/2018 10:17 (78), 12/30/2019 10:29 (10), 02/01/2021 19:52 (3), 11/26/2025 06:37 (16)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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