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[email protected]CVE-2021-29987

HistoryAug 17, 2021 - 8:15 p.m.

CVE-2021-29987

2021-08-1720:15:07

CWE-307

[email protected]

web.nvd.nist.gov

133

cve-2021-29987

firefox

thunderbird

linux

permission vulnerability

user trickery

nvd

4.3 Medium

CVSS2

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

6.5 Medium

CVSS3

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

6.6 Medium

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

48.0%

JSON

After requesting multiple permissions, and closing the first permission panel, subsequent permission panels will be displayed in a different position but still record a click in the default location, making it possible to trick a user into accepting a permission they did not want to. This bug only affects Firefox on Linux. Other operating systems are unaffected.. This vulnerability affects Firefox < 91 and Thunderbird < 91.

Affected configurations

Vulners

NVD

Node

mozillafirefoxRange≤91

mozillathunderbirdRange≤91

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

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

CNA Affected

[
  {
    "product": "Firefox",
    "vendor": "Mozilla",
    "versions": [
      {
        "lessThan": "91",
        "status": "affected",
        "version": "unspecified",
        "versionType": "custom"
      }
    ]
  },
  {
    "product": "Thunderbird",
    "vendor": "Mozilla",
    "versions": [
      {
        "lessThan": "91",
        "status": "affected",
        "version": "unspecified",
        "versionType": "custom"
      }
    ]
  }
]