CVE-2021-23953

CVSS V2 Medium 4.3 CVSS V3 Medium 4.3
Description
If a user clicked into a specifically crafted PDF, the PDF reader could be confused into leaking cross-origin information, when said information is served as chunked data. This vulnerability affects Firefox < 85, Thunderbird < 78.7, and Firefox ESR < 78.7.
Overview
  • CVE ID
  • CVE-2021-23953
  • Assigner
  • security@mozilla.org
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2021-02-26T03:15:13
  • Last Modified Date
  • 2021-03-03T21:05:28
Weakness Enumerations
CWE URL
NVD-CWE-noinfo http://cwe.mitre.org/data/definitions/NVD-noinfo.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* 1 OR 85.0
cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:* 1 OR 78.7
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* 1 OR 78.7
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:L/I:N/A:N
  • Attack Vector
  • NETWORK
  • Attack Compatibility
  • LOW
  • Privileges Required
  • NONE
  • User Interaction
  • REQUIRED
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • LOW
  • 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/mfsa2021-04/ Release Notes Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2021-05/ Release Notes Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2021-03/ Release Notes Vendor Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1683940 Issue Tracking Permissions Required Vendor Advisory
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2021-23953
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-23953
History
Created Old Value New Value Data Type Notes
2022-05-10 07:21:13 Added to TrackCVE
2022-12-05 22:50:56 2021-02-26T03:15Z 2021-02-26T03:15:13 CVE Published Date updated
2022-12-05 22:50:56 2021-03-03T21:05:28 CVE Modified Date updated
2022-12-05 22:50:56 Analyzed Vulnerability Status updated