CVE-2021-29961

CVSS V2 Medium 4.3 CVSS V3 Medium 4.3
Description
When styling and rendering an oversized `<select>` element, Firefox did not apply correct clipping which allowed an attacker to paint over the user interface. This vulnerability affects Firefox < 89.
Overview
  • CVE ID
  • CVE-2021-29961
  • Assigner
  • security@mozilla.org
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2021-06-24T14:15:10
  • Last Modified Date
  • 2021-09-20T18:48:58
Weakness Enumerations
CWE URL
CWE-863 http://cwe.mitre.org/data/definitions/863.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* 1 OR 78.11.0 89.0
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:N/AC:M/Au:N/C:N/I:P/A:N
  • Access Vector
  • NETWORK
  • Access Compatibility
  • MEDIUM
  • Authentication
  • NONE
  • Confidentiality Impact
  • NONE
  • Integrity Impact
  • PARTIAL
  • 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:N/I:L/A:N
  • Attack Vector
  • NETWORK
  • Attack Compatibility
  • LOW
  • Privileges Required
  • NONE
  • User Interaction
  • REQUIRED
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • NONE
  • Availability Impact
  • NONE
  • Base Score
  • 4.3
  • Base Severity
  • MEDIUM
  • Exploitability Score
  • 2.8
  • Impact Score
  • 1.4
References
Reference URL Reference Tags
https://www.mozilla.org/security/advisories/mfsa2021-23/ Release Notes Vendor Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1700235 Broken Link Issue Tracking Vendor Advisory
https://security.gentoo.org/glsa/202107-09 Third Party Advisory
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2021-29961
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-29961
History
Created Old Value New Value Data Type Notes
2022-05-10 16:04:23 Added to TrackCVE
2022-12-05 04:56:47 2021-06-24T14:15Z 2021-06-24T14:15:10 CVE Published Date updated
2022-12-05 04:56:47 2021-09-20T18:48:58 CVE Modified Date updated
2022-12-05 04:56:47 Analyzed Vulnerability Status updated