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MozillaCVE-2020-15666

HistoryOct 01, 2020 - 7:15 p.m.

CVE-2020-15666

2020-10-0119:15:13

CWE-209

mozilla

web.nvd.nist.gov

cve-2020-15666

information leakage

mediaerror message

firefox

vulnerability

security

CVSS2

4.3

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

AV:N/AC:M/Au:N/C:P/I:N/A:N

CVSS3

6.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

AI Score

6.3

Confidence

High

EPSS

0.002

Percentile

52.5%

JSON

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.

Affected configurations

Nvd

Vulners

Node

mozillafirefoxRange<80.0-

mozillafirefoxRange<80.0android

VendorProductVersionCPE
mozillafirefox*cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
mozillafirefox*cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
mozilla	firefox	*	cpe:2.3:a:mozilla:firefox::::::::
mozilla	firefox	*	cpe:2.3:a:mozilla:firefox::::::::

CNA Affected

[
  {
    "product": "Firefox",
    "vendor": "Mozilla",
    "versions": [
      {
        "lessThan": "80",
        "status": "affected",
        "version": "unspecified",
        "versionType": "custom"
      }
    ]
  },
  {
    "product": "Firefox for Android",
    "vendor": "Mozilla",
    "versions": [
      {
        "lessThan": "80",
        "status": "affected",
        "version": "unspecified",
        "versionType": "custom"
      }
    ]
  }
]