8.2
HIGH
CVE-2021-31847
McAfee Agent for Windows DLL Preloading Privilege Escalation Vulnerability
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.

INFO

Published Date :

Sept. 22, 2021, 2:15 p.m.

Last Modified :

Nov. 15, 2023, 8:42 p.m.

Remotely Exploitable :

No

Impact Score :

6.0

Exploitability Score :

1.5
Affected Products

The following products are affected by CVE-2021-31847 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Mcafee agent
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2021-31847.

URL Resource
https://kc.mcafee.com/corporate/index?page=content&id=SB10369 Broken Link
https://www.zerodayinitiative.com/advisories/ZDI-21-1104/ Third Party Advisory VDB Entry

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2021-31847 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2021-31847 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • Modified Analysis by [email protected]

    Nov. 15, 2023

    Action Type Old Value New Value
    Changed Reference Type https://kc.mcafee.com/corporate/index?page=content&id=SB10369 No Types Assigned https://kc.mcafee.com/corporate/index?page=content&id=SB10369 Broken Link
    Changed Reference Type https://www.zerodayinitiative.com/advisories/ZDI-21-1104/ No Types Assigned https://www.zerodayinitiative.com/advisories/ZDI-21-1104/ Third Party Advisory, VDB Entry
    Added CWE NIST CWE-427
    Changed CPE Configuration OR *cpe:2.3:a:mcafee:mcafee_agent:*:*:*:*:*:windows:*:* versions up to (excluding) 5.7.4 OR *cpe:2.3:a:mcafee:agent:*:*:*:*:*:windows:*:* versions up to (excluding) 5.7.4
  • CVE Source Update by [email protected]

    Nov. 07, 2023

    Action Type Old Value New Value
    Changed Source McAfee (DEFUNCT) Trellix
  • CVE Modified by [email protected]

    Nov. 07, 2023

    Action Type Old Value New Value
    Added Reference Trellix https://kc.mcafee.com/corporate/index?page=content&id=SB10369 [No types assigned]
    Added Reference Trellix https://www.zerodayinitiative.com/advisories/ZDI-21-1104/ [No types assigned]
    Removed Reference McAfee (DEFUNCT) https://kc.mcafee.com/corporate/index?page=content&id=SB10369
    Removed Reference McAfee (DEFUNCT) https://www.zerodayinitiative.com/advisories/ZDI-21-1104/
    Added CWE Trellix CWE-269
    Added CWE Trellix CWE-347
    Removed CWE McAfee (DEFUNCT) CWE-347
    Removed CWE McAfee (DEFUNCT) CWE-269
    Removed CVSS V3.1 McAfee (DEFUNCT) AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
    Added CVSS V3.1 Trellix AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
  • Initial Analysis by [email protected]

    Sep. 29, 2021

    Action Type Old Value New Value
    Added CVSS V2 Metadata Victim must voluntarily interact with attack mechanism
    Added CVSS V2 NIST (AV:L/AC:M/Au:N/C:C/I:C/A:C)
    Added CVSS V3.1 NIST AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
    Changed Reference Type https://kc.mcafee.com/corporate/index?page=content&id=SB10369 No Types Assigned https://kc.mcafee.com/corporate/index?page=content&id=SB10369 Patch, Vendor Advisory
    Changed Reference Type https://www.zerodayinitiative.com/advisories/ZDI-21-1104/ No Types Assigned https://www.zerodayinitiative.com/advisories/ZDI-21-1104/ Third Party Advisory, VDB Entry
    Added CPE Configuration OR *cpe:2.3:a:mcafee:mcafee_agent:*:*:*:*:*:windows:*:* versions up to (excluding) 5.7.4
  • CVE Modified by [email protected]

    Sep. 22, 2021

    Action Type Old Value New Value
    Added Reference https://www.zerodayinitiative.com/advisories/ZDI-21-1104/ [No Types Assigned]
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2021-31847 is associated with the following CWEs:

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.09 }} 0.00%

score

0.39233

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability