Security Bulletin - VirusScan Enterprise update fixes three vulnerabilities (CVE-2019-3585, CVE-2019-3588, and CVE-2020-7280)
Security Bulletins ID:
SB10302
Last Modified: 2023-01-18 15:17:02 Etc/GMT
Last Modified: 2023-01-18 15:17:02 Etc/GMT
Summary
First Published: June 9, 2020
Article contents:
CVE-2019-3585
When a threat is detected and the Alert Notifications are turned on (On-Access Scan Messages), the 'Alert Message' window would open with Admin privileges, allowing a standard user to interact with the available menus with elevated privileges. In certain conditions, this issue may also cause the On-Access Scan Messages window to pop-up on top of the Windows Lock Screen.
This update resolves all of the following vulnerabilities.
To remediate all these issues, update to VSE 8.8 Patch 15.
Go to the Product Downloads site, and download the applicable product update file:
Download and Installation Instructions
See KB56057 for instructions on how to download McAfee products, documentation, updates, and hotfixes. Review the Release Notes and the Installation Guide, which you can download from the Documentation tab, for instructions on how to install these updates.
Acknowledgments
CVE-2019-3585 and CVE-2019-3588 - We credit the Lockheed Martin Red Team for reporting these flaws.
CVE-2020-7280 - We credit Glennlloyd working with Trend Micro's Zero Day Initiative for reporting this flaw.
Frequently Asked Questions (FAQs)
How do I know if my product is vulnerable?
For Endpoint products:
Use the following instructions for endpoint or client-based products:
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?
All Security Bulletins are published on our Knowledge Center. Security Bulletins are retired (removed) once a product is both End of Sale and End of Support (End of Life).
How do I report a product vulnerability to you?
If you have information about a security issue or vulnerability with a product, follow the instructions provided in KB95563 - Report a vulnerability.
How do you respond to this and any other reported security flaws?
Our key priority is the security of our customers. If a vulnerability is found within any of our software or services, we work closely with the relevant security software development team to ensure the rapid and effective development of a fix and communication plan.
We only publish Security Bulletins if they include something actionable such as a workaround, mitigation, version update, or hotfix. Otherwise, we would simply be informing the hacker community that our products are a target, putting our customers at greater risk. For products that are updated automatically, a non-actionable Security Bulletin might be published to acknowledge the discoverer.
To view our PSIRT policy, see KB95564 - About PSIRT.
Resources
Disclaimer
The information provided in this Security Bulletin is provided as is without warranty of any kind. We disclaim all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall we or our suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits, or special damages, even if we or our suppliers have been advised of the possibility of such damages. Some states don't allow the exclusion or limitation of liability for consequential or incidental damages, so the preceding limitation may not apply.
Any future product release dates mentioned in this Security Bulletin are intended to outline our general product direction, and they shouldn't be relied on in making a purchasing decision. The product release dates are for information purposes only, and may not be incorporated into any contract. The product release dates aren't a commitment, promise, or legal obligation to deliver any material, code, or functionality. The development, release, and timing of any features or functionality described for our products remain at our sole discretion and may be changed or canceled at any time.
Impact of Vulnerability: | Permissions, Privileges, and Access Control (CWE-264) Privilege Escalation (CWE-274) Data Leakage via Privilege Escalation (CWE-269) |
CVE ID: | CVE-2019-3585 CVE-2019-3588 CVE-2020-7280 |
Severity Rating: | CVE-2019-3585: High CVE-2019-3588: Medium CVE-2020-7280: High |
CVSS v3 Base/Temporal Scores: | CVE-2019-3585: 7.0 / 6.3 CVE-2019-3588: 6.3 / 5.7 CVE-2020-7280: 7.8 / 7.0 |
Recommendations: | Install or update to VirusScan Enterprise (VSE) 8.8 Patch 15 |
Security Bulletin Replacement: | None |
Affected Software: | VSE prior to 8.8 Patch 14 is affected by CVE- 2019-3585 and CVE-2019-3588 VSE prior to 8.8 Patch 15 is affected by CVE-2020-7280 |
Location of updated software: | Product Downloads site |
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Article contents:
- Vulnerability Description
- Remediation
- Acknowledgments
- Frequently Asked Questions (FAQs)
- Resources
- Disclaimer
CVE-2019-3585
- By default,
McTray.exe is configured to run with the logged in user's privileges. If you do not startMcTray.exe with elevated privileges, you are not impacted by this issue. - When the process
McTray.exe runs with elevated privileges, VSE might spawn a process inheriting the parent's privileges. This issue exposes the system to be manipulated by an attacker.
When a threat is detected and the Alert Notifications are turned on (On-Access Scan Messages), the 'Alert Message' window would open with Admin privileges, allowing a standard user to interact with the available menus with elevated privileges. In certain conditions, this issue may also cause the On-Access Scan Messages window to pop-up on top of the Windows Lock Screen.
This update resolves all of the following vulnerabilities.
- CVE-2019-3585
Privilege Escalation vulnerability in Microsoft Windows client (McTray.exe) in McAfee VirusScan Enterprise (VSE) 8.8 prior to Patch 14 may allow local users to interact with the On-Access Scan Messages - Threat Alert Window with elevated privileges via running McAfee Tray with elevated privileges.
https://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2019-3585
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-3585
- CVE-2019-3588
Privilege Escalation vulnerability in Microsoft Windows client (McTray.exe) in McAfee VirusScan Enterprise (VSE) 8.8 prior to Patch 14 may allow unauthorized users to interact with the On-Access Scan Messages - Threat Alert Window when the Windows Login Screen is locked.
https://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2019-3588
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-3588
- CVE-2020-7280
Privilege Escalation vulnerability during daily DAT updates when using McAfee Virus Scan Enterprise (VSE) prior to 8.8 Patch 15 allows local users to cause the deletion and creation of files they would not normally have permission to through altering the target of symbolic links. This is timing dependent.
https://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2020-7280
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-7280
To remediate all these issues, update to VSE 8.8 Patch 15.
Go to the Product Downloads site, and download the applicable product update file:
Product | Version | Type | Release Date |
VSE | 8.8 Patch 15 | Update | June 9, 2020 |
Download and Installation Instructions
See KB56057 for instructions on how to download McAfee products, documentation, updates, and hotfixes. Review the Release Notes and the Installation Guide, which you can download from the Documentation tab, for instructions on how to install these updates.
Acknowledgments
CVE-2019-3585 and CVE-2019-3588 - We credit the Lockheed Martin Red Team for reporting these flaws.
CVE-2020-7280 - We credit Glennlloyd working with Trend Micro's Zero Day Initiative for reporting this flaw.
Frequently Asked Questions (FAQs)
How do I know if my product is vulnerable?
For Endpoint products:
Use the following instructions for endpoint or client-based products:
- Right-click on the McAfee tray shield icon on the Windows taskbar.
- Select Open Console.
- In the console, select Action Menu.
- In the Action Menu, select Product Details. 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-2019-3585: VSE Escalation of Privileges through Alert pop-up window
Base Score 7.0 Attack Vector (AV) Local (L) Attack Complexity (AC) High (H) Privileges Required (PR) None (N) User Interaction (UI) Required (R) Scope (S) Unchanged (U) Confidentiality (C) High (H) Integrity (I) High (H) Availability (A) High (H) Temporal Score (Overall) 6.3 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:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C&version=3.1
- CVE-2019-3588: Using VSE to bypass Windows Credentials on Lock screen
Base Score 6.3 Attack Vector (AV) Physical (P) Attack Complexity (AC) High (H) Privileges Required (PR) None (N) User Interaction (UI) Required (R) Scope (S) Unchanged (U) Confidentiality (C) High (H) Integrity (I) High (H) Availability (A) High (H) Temporal Score (Overall) 5.7 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:U/C:H/I:H/A:H/E:P/RL:O/RC:C&version=3.1
- CVE-2020-7280: Symbolic Link vulnerability during DAT update
Base Score 7.8 Attack Vector (AV) Local (L) Attack Complexity (AC) Low (L) Privileges Required (PR) Low (L) User Interaction (UI) None (N) Scope (S) Unchanged (U) Confidentiality (C) High (H) Integrity (I) High (H) Availability (A) High (H) Temporal Score (Overall) 7.0 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:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C&version=3.1
All Security Bulletins are published on our Knowledge Center. Security Bulletins are retired (removed) once a product is both End of Sale and End of Support (End of Life).
How do I report a product vulnerability to you?
If you have information about a security issue or vulnerability with a product, follow the instructions provided in KB95563 - Report a vulnerability.
How do you respond to this and any other reported security flaws?
Our key priority is the security of our customers. If a vulnerability is found within any of our software or services, we work closely with the relevant security software development team to ensure the rapid and effective development of a fix and communication plan.
We only publish Security Bulletins if they include something actionable such as a workaround, mitigation, version update, or hotfix. Otherwise, we would simply be informing the hacker community that our products are a target, putting our customers at greater risk. For products that are updated automatically, a non-actionable Security Bulletin might be published to acknowledge the discoverer.
To view our PSIRT policy, see KB95564 - About PSIRT.
Resources
To contact Technical Support, go to the Create a Service Request page and log on to the ServicePortal.
- If you are a registered user, type your User ID and Password, and then click Log In.
- If you are not a registered user, click Register and complete the fields to have your password and instructions emailed to you.
Disclaimer
The information provided in this Security Bulletin is provided as is without warranty of any kind. We disclaim all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall we or our suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits, or special damages, even if we or our suppliers have been advised of the possibility of such damages. Some states don't allow the exclusion or limitation of liability for consequential or incidental damages, so the preceding limitation may not apply.
Any future product release dates mentioned in this Security Bulletin are intended to outline our general product direction, and they shouldn't be relied on in making a purchasing decision. The product release dates are for information purposes only, and may not be incorporated into any contract. The product release dates aren't a commitment, promise, or legal obligation to deliver any material, code, or functionality. The development, release, and timing of any features or functionality described for our products remain at our sole discretion and may be changed or canceled at any time.