Mozilla Firefox up to 79.x Media Error information disclosure

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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4.8$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic has been found in Mozilla Firefox up to 79.x. Affected is an unknown function of the component Media Error Handler. The manipulation leads to information disclosure. This vulnerability is documented as CVE-2020-15666. The attack requires being on the local network. There is not any exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in Mozilla Firefox up to 79.x (Web Browser). It has been rated as problematic. This issue affects some unknown processing of the component Media Error Handler. The manipulation with an unknown input leads to a information disclosure vulnerability. Using CWE to declare the problem leads to CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. Impacted is confidentiality. The summary by CVE is:

When trying to load a non-video in an audio/video context the exact status code (200, 302, 404, 500, 412, 403, etc.) was disclosed via the MediaError Message. This level of information leakage is inconsistent with the standardized onerror/onsuccess disclosure and can lead to inferring login status to services or device discovery on a local network among other attacks. This vulnerability affects Firefox < 80 and Firefox for Android < 80.

The weakness was released 10/01/2020 as Bug 1450853 as not defined bug report (Bugzilla). The advisory is shared at bugzilla.mozilla.org. The identification of this vulnerability is CVE-2020-15666 since 07/10/2020. Access to the local network is required for this attack to succeed. No form of authentication is needed for a successful exploitation. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1592 for this issue.

Upgrading to version 80.0 eliminates this vulnerability.

Entries connected to this vulnerability are available at VDB-162163, VDB-162162 and VDB-162160. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

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Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.0
VulDB Meta Temp Score: 4.9

VulDB Base Score: 3.5
VulDB Temp Score: 3.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.5
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: Information disclosure
CWE: CWE-200 / CWE-284 / CWE-266
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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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Firefox 80.0

Timelineinfo

07/10/2020 🔍
10/01/2020 +83 days 🔍
10/02/2020 +1 days 🔍
11/15/2020 +44 days 🔍

Sourcesinfo

Vendor: mozilla.org
Product: mozilla.org

Advisory: Bug 1450853
Status: Not defined

CVE: CVE-2020-15666 (🔍)
GCVE (CVE): GCVE-0-2020-15666
GCVE (VulDB): GCVE-100-162161
See also: 🔍

Entryinfo

Created: 10/02/2020 07:43
Updated: 11/15/2020 13:16
Changes: 10/02/2020 07:43 (42), 10/02/2020 07:48 (4), 10/05/2020 08:09 (1), 11/14/2020 09:35 (4), 11/15/2020 13:16 (14)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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