CVE-2021-21870

CVSS V2 Medium 6.8 CVSS V3 High 8.8
Description
A use-after-free vulnerability exists in the JavaScript engine of Foxit Software’s PDF Reader, version 10.1.4.37651. A specially crafted PDF document can trigger the reuse of previously free memory, which can lead to arbitrary code execution. An attacker needs to trick the user into opening a malicious file or site to trigger this vulnerability if the browser plugin extension is enabled.
Overview
  • CVE ID
  • CVE-2021-21870
  • Assigner
  • talos-cna@cisco.com
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2021-08-05T21:15:10
  • Last Modified Date
  • 2022-09-03T03:26:35
Weakness Enumerations
CWE URL
CWE-416 http://cwe.mitre.org/data/definitions/416.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
cpe:2.3:a:foxit:pdf_reader:10.1.4.37651:*:*:*:*:*:*:* 1 OR
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:N/AC:M/Au:N/C:P/I:P/A:P
  • Access Vector
  • NETWORK
  • Access Compatibility
  • MEDIUM
  • Authentication
  • NONE
  • Confidentiality Impact
  • PARTIAL
  • Integrity Impact
  • PARTIAL
  • Availability Impact
  • PARTIAL
  • Base Score
  • 6.8
  • Severity
  • MEDIUM
  • Exploitability Score
  • 8.6
  • Impact Score
  • 6.4
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
  • Attack Vector
  • NETWORK
  • Attack Compatibility
  • LOW
  • Privileges Required
  • NONE
  • User Interaction
  • REQUIRED
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • HIGH
  • Availability Impact
  • HIGH
  • Base Score
  • 8.8
  • Base Severity
  • HIGH
  • Exploitability Score
  • 2.8
  • Impact Score
  • 5.9
References
Reference URL Reference Tags
https://talosintelligence.com/vulnerability_reports/TALOS-2021-1307 Exploit Third Party Advisory
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2021-21870
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-21870
History
Created Old Value New Value Data Type Notes
2022-04-20 17:01:53 Added to TrackCVE
2022-12-05 07:31:03 2021-08-05T21:15Z 2021-08-05T21:15:10 CVE Published Date updated
2022-12-05 07:31:03 2022-09-03T03:26:35 CVE Modified Date updated
2022-12-05 07:31:03 Analyzed Vulnerability Status updated