CVE-2021-31847

CVSS V2 Medium 6.9 CVSS V3 High 7.8
Description
Improper access control vulnerability in the repair process for McAfee Agent for Windows prior to 5.7.4 could allow a local attacker to perform a DLL preloading attack using unsigned DLLs. This would result in elevation of privileges and the ability to execute arbitrary code as the system user, through not correctly protecting a temporary directory used in the repair process and not checking the DLL signature.
Overview
  • CVE ID
  • CVE-2021-31847
  • Assigner
  • psirt@mcafee.com
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2021-09-22T14:15:07
  • Last Modified Date
  • 2021-09-29T16:51:21
Weakness Enumerations
CWE URL
CWE-347 http://cwe.mitre.org/data/definitions/347.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
cpe:2.3:a:mcafee:mcafee_agent:*:*:*:*:*:windows:*:* 1 OR 5.7.4
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:L/AC:M/Au:N/C:C/I:C/A:C
  • Access Vector
  • LOCAL
  • Access Compatibility
  • MEDIUM
  • Authentication
  • NONE
  • Confidentiality Impact
  • COMPLETE
  • Integrity Impact
  • COMPLETE
  • Availability Impact
  • COMPLETE
  • Base Score
  • 6.9
  • Severity
  • MEDIUM
  • Exploitability Score
  • 3.4
  • Impact Score
  • 10
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
  • Attack Vector
  • LOCAL
  • Attack Compatibility
  • LOW
  • Privileges Required
  • NONE
  • User Interaction
  • REQUIRED
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • HIGH
  • Availability Impact
  • HIGH
  • Base Score
  • 7.8
  • Base Severity
  • HIGH
  • Exploitability Score
  • 1.8
  • Impact Score
  • 5.9
References
Reference URL Reference Tags
https://kc.mcafee.com/corporate/index?page=content&id=SB10369 Patch Vendor Advisory
https://www.zerodayinitiative.com/advisories/ZDI-21-1104/ Third Party Advisory VDB Entry
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2021-31847
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-31847
History
Created Old Value New Value Data Type Notes
2022-05-10 06:52:58 Added to TrackCVE
2022-12-05 11:06:10 2021-09-22T14:15Z 2021-09-22T14:15:07 CVE Published Date updated
2022-12-05 11:06:10 2021-09-29T16:51:21 CVE Modified Date updated
2022-12-05 11:06:10 Analyzed Vulnerability Status updated