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[email protected]CVE-2021-43533

HistoryDec 08, 2021 - 10:15 p.m.

CVE-2021-43533

2021-12-0822:15:09

[email protected]

web.nvd.nist.gov

cve-2021-43533

firefox

url parsing

internationalized domain names

security vulnerability

nvd

phishing

4.3 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

NONE

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

4.3 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

LOW

Availability Impact

NONE

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

4.8 Medium

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

32.6%

JSON

When parsing internationalized domain names, high bits of the characters in the URLs were sometimes stripped, resulting in inconsistencies that could lead to user confusion or attacks such as phishing. This vulnerability affects Firefox < 94.

Affected configurations

Vulners

NVD

Node

mozillafirefoxRange≤94

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": "94",
        "status": "affected",
        "version": "unspecified",
        "versionType": "custom"
      }
    ]
  }
]