CVE-2021-45335

CVSS V2 High 7.2 CVSS V3 High 8.8
Description
Sandbox component in Avast Antivirus prior to 20.4 has an insecure permission which could be abused by local user to control the outcome of scans, and therefore evade detection or delete arbitrary system files.
Overview
  • CVE ID
  • CVE-2021-45335
  • Assigner
  • cve@mitre.org
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2021-12-27T14:15:07
  • Last Modified Date
  • 2022-01-07T17:29:55
Weakness Enumerations
CWE URL
CWE-276 http://cwe.mitre.org/data/definitions/276.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
cpe:2.3:a:avast:antivirus:*:*:*:*:*:*:*:* 1 OR 20.4
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:L/AC:L/Au:N/C:C/I:C/A:C
  • Access Vector
  • LOCAL
  • Access Compatibility
  • LOW
  • Authentication
  • NONE
  • Confidentiality Impact
  • COMPLETE
  • Integrity Impact
  • COMPLETE
  • Availability Impact
  • COMPLETE
  • Base Score
  • 7.2
  • Severity
  • HIGH
  • Exploitability Score
  • 3.9
  • Impact Score
  • 10
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
  • Attack Vector
  • LOCAL
  • Attack Compatibility
  • LOW
  • Privileges Required
  • LOW
  • User Interaction
  • NONE
  • Scope
  • CHANGED
  • Confidentiality Impact
  • HIGH
  • Availability Impact
  • HIGH
  • Base Score
  • 8.8
  • Base Severity
  • HIGH
  • Exploitability Score
  • 2
  • Impact Score
  • 6
References
Reference URL Reference Tags
https://github.com/the-deniss/Vulnerability-Disclosures/tree/main/CVE-2021-AVST3%20%26%20CVE-2021-AVST4%20%26%20CVE-2021-AVST5 Exploit Third Party Advisory
https://www.avast.com/hacker-hall-of-fame/en/researcher-david-eade-reports-antitrack-bug-to-avast-0 Vendor Advisory
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2021-45335
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-45335
History
Created Old Value New Value Data Type Notes
2022-05-10 06:38:04 Added to TrackCVE
2022-12-06 05:13:14 2021-12-27T14:15Z 2021-12-27T14:15:07 CVE Published Date updated
2022-12-06 05:13:14 2022-01-07T17:29:55 CVE Modified Date updated
2022-12-06 05:13:14 Analyzed Vulnerability Status updated