CVE-2021-29987

CVSS V2 Medium 4.3 CVSS V3 Medium 6.5
Description
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.
Overview
  • CVE ID
  • CVE-2021-29987
  • Assigner
  • security@mozilla.org
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2021-08-17T20:15:07
  • Last Modified Date
  • 2022-03-16T15:13:16
Weakness Enumerations
CWE URL
CWE-307 http://cwe.mitre.org/data/definitions/307.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
AND
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* 1 OR 91.0
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* 1 OR 91.0
cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:* 0 OR
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:N/AC:M/Au:N/C:P/I:N/A:N
  • Access Vector
  • NETWORK
  • Access Compatibility
  • MEDIUM
  • Authentication
  • NONE
  • Confidentiality Impact
  • PARTIAL
  • Integrity Impact
  • NONE
  • Availability Impact
  • NONE
  • Base Score
  • 4.3
  • Severity
  • MEDIUM
  • Exploitability Score
  • 8.6
  • Impact Score
  • 2.9
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
  • Attack Vector
  • NETWORK
  • Attack Compatibility
  • LOW
  • Privileges Required
  • NONE
  • User Interaction
  • REQUIRED
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • HIGH
  • Availability Impact
  • NONE
  • Base Score
  • 6.5
  • Base Severity
  • MEDIUM
  • Exploitability Score
  • 2.8
  • Impact Score
  • 3.6
References
Reference URL Reference Tags
https://www.mozilla.org/security/advisories/mfsa2021-33/ Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2021-36/ Vendor Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1716129 Issue Tracking Vendor Advisory
https://security.gentoo.org/glsa/202202-03 Third Party Advisory
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2021-29987
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-29987
History
Created Old Value New Value Data Type Notes
2022-05-10 15:45:45 Added to TrackCVE
2022-12-05 08:26:13 2021-08-17T20:15Z 2021-08-17T20:15:07 CVE Published Date updated
2022-12-05 08:26:13 2022-03-16T15:13:16 CVE Modified Date updated
2022-12-05 08:26:13 Analyzed Vulnerability Status updated