Security Bulletin - Endpoint Security for Windows update fixes four vulnerabilities (CVE-2020-7319, CVE-2020-7320, CVE-2020-7322, and CVE-2020-7323)
Security Bulletins ID:
SB10327
Last Modified: 2022-05-04 16:58:59 Etc/GMT
Last Modified: 2022-05-04 16:58:59 Etc/GMT
Summary
First Published: September 8, 2020
Product: | Impacted Versions: | CVE ID: | Impact of Vulnerabilities: | Severity Ratings: | CVSS v3.1 Base/Temporal Scores: |
Endpoint Security (ENS) | 10.7.0.x 10.6.x 10.5.x |
CVE-2020-7319 | Improper Access Control (CWE-284) | High | 8.8 / 7.9 |
ENS | 10.7.0.x 10.6.x 10.5.x |
CVE-2020-7320 | Protection Mechanism Failure (CWE-693) | Medium | 6.7 / 6.0 |
ENS | 10.7.0.x 10.6.x 10.5.x |
CVE-2020-7322 | Exposure of Sensitive Information to an Unauthorized Actor (CWE-200) | Medium | 4.7 / 4.2 |
ENS | 10.7.0.x 10.6.x 10.5.x |
CVE-2020-7323 | Authentication Bypass (CWE-288) | Medium | 6.9 / 6.2 |
Recommendations: | Install or update to the latest versions listed in the Remediation section | ||||
Security Bulletin Replacement: | None | ||||
Location of updated software: | Product Downloads site |
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Article contents:
- Vulnerability Description
- Remediation
- Acknowledgments
- Frequently Asked Questions (FAQs)
- Resources
- Disclaimer
- CVE-2020-7319
Improper Access Control vulnerability in Endpoint Security (ENS) for Windows prior to 10.7.0 September 2020 Update allows local users to access files which the user otherwise would not have access to via manipulating symbolic links to redirect McAfee file operations to an unintended file.
https://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2020-7319
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-7319
- CVE-2020-7320
Protection Mechanism Failure vulnerability in Endpoint Security (ENS) for Windows prior to 10.7.0 September 2020 Update allows local administrator to temporarily reduce the detection capability allowing otherwise detected malware to run via stopping certain Microsoft services.
https://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2020-7320
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-7320
- CVE-2020-7322
Information Disclosure Vulnerability in Endpoint Security (ENS) for Windows prior to 10.7.0 September 2020 Update allows local users to gain access to sensitive information via incorrectly logging of sensitive information in debug logs.
https://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2020-7322
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-7322
- CVE-2020-7323
Authentication Protection Bypass vulnerability in Endpoint Security (ENS) for Windows prior to 10.7.0 September 2020 Update allows physical local users to bypass the Windows lock screen via triggering certain detection events while the computer screen is locked and the McTray.exe is running with elevated privileges. This issue is timing dependent and requires physical access to the machine.
https://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2020-7323
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-7323
To remediate this issue:
- Customers on earlier ENS 10.7.0 releases: Update to ENS 10.7.0 September 2020 Update.
- Customers on earlier ENS 10.6.1 releases: Update to ENS 10.6.1 September 2020 Update, or upgrade to ENS 10.7.0 September 2020 Update.
- Customers on ENS 10.5.5 releases: Upgrade to ENS 10.6.1 September 2020 Update, or upgrade to ENS 10.7.0 September 2020 Update.
Product | Version | Type | Release Date |
ENS | 10.7.0 September 2020 Update | Update | September 8, 2020 |
ENS | 10.6.1 September 2020 Update | Update | September 8, 2020 |
Download and Installation Instructions
For instructions to download product updates and hotfixes, see KB56057 - How to download Enterprise product updates and documentation. Review the Release Notes and Installation Guide for instructions on how to install these updates. All documentation is available at our Product Documentation site.
Acknowledgments
CVE-2020-7319: We credit Jakub Palaczynski (ING Tech Poland) for responsibly reporting this flaw.
CVE-2020-7323: We credit Lockheed Martin Red Team for responsibly reporting this flaw.
Frequently Asked Questions (FAQs)
How do I know if my product is vulnerable?
For Endpoint Security:
Use the following instructions for endpoint or client-based products:
- Right-click the McAfee tray shield icon on the Windows taskbar.
- Select McAfee Endpoint Security.
- In the console, select Action Menu.
- In the Action Menu, select About. The product version displays.
CVSS, or Common Vulnerability Scoring System, is the result of the National Infrastructure Advisory Council's effort to standardize a system of assessing the criticality of a vulnerability. This system offers an unbiased criticality score between 0 and 10 that customers can use to judge how critical a vulnerability is and plan accordingly. For more information, visit the CVSS website at: https://www.first.org/cvss/.
When calculating CVSS scores, we've adopted a philosophy that fosters consistency and repeatability. Our guiding principle for CVSS scoring is to score the exploit under consideration by itself. We consider only the immediate and direct impact of the exploit under consideration. We do not factor into a score any potential follow-on exploits that might be made possible by the successful exploitation of the issue being scored.
What are the CVSS scoring metrics?
- CVE-2020-7319: Improper Access Control Vulnerability in ENS for Windows
Base Score 8.8 Attack Vector (AV) Local (L) Attack Complexity (AC) Low (L) Privileges Required (PR) Low (L) User Interaction (UI) None (N) Scope (S) Changed (C) Confidentiality (C) High (H) Integrity (I) High (H) Availability (A) High (H) Temporal Score (Overall) 7.9 Exploitability (E) Proof-of-Concept (P) Remediation Level (RL) Official Fix (O) Report Confidence (RC) Confirmed (C)
NOTE: The below CVSS version 3.1 vector was used to generate this score.
https://nvd.nist.gov/vuln-metrics/cvss/v3-calculator?vector=AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:P/RL:O/RC:C&version=3.1
- CVE-2020-7320: Protection Mechanism Failure in ENS for Windows
Base Score 6.7 Attack Vector (AV) Local (L) Attack Complexity (AC) High (H) Privileges Required (PR) High (H) User Interaction (UI) None (N) Scope (S) Changed (C) Confidentiality (C) Low (L) Integrity (I) High (H) Availability (A) Low (L) Temporal Score (Overall) 6.0 Exploitability (E) Proof-of-Concept (P) Remediation Level (RL) Official Fix (O) Report Confidence (RC) Confirmed (C)
NOTE: The below CVSS version 3.1 vector was used to generate this score.
https://nvd.nist.gov/vuln-metrics/cvss/v3-calculator?vector=AV:L/AC:H/PR:H/UI:N/S:C/C:L/I:H/A:L/E:P/RL:O/RC:C&version=3.1
- CVE-2020-7322: Exposure of Sensitive Information in ENS for Windows
Base Score 4.7 Attack Vector (AV) Local (L) Attack Complexity (AC) High (H) Privileges Required (PR) High (H) User Interaction (UI) Required (R) Scope (S) Changed (C) Confidentiality (C) Low (L) Integrity (I) Low (L) Availability (A) Low (L) Temporal Score (Overall) 4.2 Exploitability (E) Proof-of-Concept (P) Remediation Level (RL) Official Fix (O) Report Confidence (RC) Confirmed (C)
NOTE: The below CVSS version 3.1 vector was used to generate this score.
https://nvd.nist.gov/vuln-metrics/cvss/v3-calculator?vector=AV:L/AC:H/PR:H/UI:R/S:C/C:L/I:L/A:L/E:P/RL:O/RC:C&version=3.1
- CVE-2020-7323: Authentication Protection Bypass vulnerability in ENS for Windows
Base Score 6.9 Attack Vector (AV) Physical (P) Attack Complexity (AC) High (H) Privileges Required (PR) None (N) User Interaction (UI) Required (R) Scope (S) Changed (C) Confidentiality (C) High (H) Integrity (I) High (H) Availability (A) Low (L) Temporal Score (Overall) 6.2 Exploitability (E) Proof-of-Concept (P) Remediation Level (RL) Official Fix (O) Report Confidence (RC) Confirmed (C)
NOTE: The below CVSS version 3.1 vector was used to generate this score.
https://nvd.nist.gov/vuln-metrics/cvss/v3-calculator?vector=AV:P/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:L/E:P/RL:O/RC:C&version=3.1
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Resources
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