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[email protected]CVE-2020-12391

HistoryMay 26, 2020 - 6:15 p.m.

CVE-2020-12391

2020-05-2618:15:11

CWE-863

[email protected]

web.nvd.nist.gov

110

information security

document

data urls

object element

csp

context

script execution

firefox

vulnerability

cve-2020-12391

5 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

NONE

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

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

HIGH

Availability Impact

NONE

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

7.8 High

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

43.8%

JSON

Documents formed using data: URLs in an OBJECT element failed to inherit the CSP of the creating context. This allowed the execution of scripts that should have been blocked, albeit with a unique opaque origin. This vulnerability affects Firefox < 76.

Affected configurations

Vulners

NVD

Node

mozillafirefoxRange≤76

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

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

CNA Affected

[
  {
    "product": "Firefox",
    "vendor": "Mozilla",
    "versions": [
      {
        "lessThan": "76",
        "status": "affected",
        "version": "unspecified",
        "versionType": "custom"
      }
    ]
  }
]