McAfee Security Bulletin - Threat Intelligence Exchange Server update fixes five third-party vulnerabilities (CVE-2019-3738, CVE-2020-0543, CVE-2020-0549, CVE-2020-2781, and CVE-2020-2830)

 

Product:	Impacted Versions:	CVE ID:	Impact of Vulnerabilities:	Severity Ratings:	CVSS v3.1 Base/Temporal Scores:
Threat Intelligence Exchange (TIE) Server	3.0, 2.x	CVE-2019-3738	Improper Verification of Cryptographic Signature (CWE-347)	Medium	6.5 / 5.4
TIE Server	3.0, 2.x	CVE-2020-0543	Data Leakage via Privilege Escalation (CWE-269)	Medium	5.5 / 4.6
TIE Server	3.0, 2.x	CVE-2020-0549	Data Leakage via Privilege Escalation (CWE-269)	Medium	5.5 / 4.6
TIE Server	3.0, 2.x	CVE-2020-2781	Denial of Service (CWE-730)	Medium	5.3 / 4.4
TIE Server	3.0, 2.x	CVE-2020-2830	Denial of Service (CWE-730)	Medium	5.3 / 4.4
Recommendations:	Install or update to TIE Server 3.0.1
Security Bulletin Replacement:	None
Location of updated software:	http://www.mcafee.com/us/downloads/downloads.aspx

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Article contents:

• Vulnerability Description
• Remediation
• Frequently Asked Questions (FAQs)
• Resources
• Disclaimer

Vulnerability Description

1. CVE-2019-3738
   RSA BSAFE Crypto-J versions prior to 6.2.5 are vulnerable to a Missing Required Cryptographic Step vulnerability. A malicious remote attacker could potentially exploit this vulnerability to coerce two parties into computing the same predictable shared key.
   https://nvd.nist.gov/vuln/detail/CVE-2019-3738
   https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-3738
    
2. CVE-2020-0543
   Incomplete cleanup from specific special register read operations in some Intel® Processors may allow an authenticated user to potentially enable information disclosure via local access.
   https://nvd.nist.gov/vuln/detail/CVE-2020-0543
   https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-0543
    
3. CVE-2020-0549
   Cleanup errors in some data cache evictions for some Intel® Processors may allow an authenticated user to potentially enable information disclosure via local access.
   https://nvd.nist.gov/vuln/detail/CVE-2020-0549
   https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-0549
    
4. CVE-2020-2781
   Vulnerability in the Java SE, Java SE Embedded product of Oracle Java SE (component: JSSE). Supported versions that are affected are Java SE: 7u251, 8u241, 11.0.6 and 14; Java SE Embedded: 8u241. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTPS to compromise Java SE, Java SE Embedded. Successful attacks of this vulnerability can result in unauthorized ability to cause a partial denial of service (partial DOS) of Java SE, Java SE Embedded.
   https://nvd.nist.gov/vuln/detail/CVE-2020-2781
   https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-2781
    
5. CVE-2020-2830
   Vulnerability in the Java SE, Java SE Embedded product of Oracle Java SE (component: Concurrency). Supported versions that are affected are Java SE: 7u251, 8u241, 11.0.6 and 14; Java SE Embedded: 8u241. Easily exploitable vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise Java SE, Java SE Embedded. Successful attacks of this vulnerability can result in unauthorized ability to cause a partial denial of service (partial DOS) of Java SE, Java SE Embedded.
   https://nvd.nist.gov/vuln/detail/CVE-2020-2830
   https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-2830

Remediation
To remediate this issue, McAfee recommends upgrading to TIE Server 3.0.1.

Go to the Product Downloads site and download the applicable product update file:
 

Product	Version	Type	File Name	Release Date
TIE Server	3.0.1	Update	TIEServer_3.0.1_119	September 8, 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.
Frequently Asked Questions (FAQs)
How do I know if my McAfee product is vulnerable or not?
For Appliances:
Use the following instructions for Appliance-based products:

1. Open the Administrator's User Interface (UI).
2. Click the About link. The product version displays.

What is CVSS?
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, McAfee has 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?

1. CVE-2019-3738: RSA BSAFE Crypto-J Missing Required Cryptographic Step
    

   Base Score	6.5
   Attack Vector (AV)	Network (N)
   Attack Complexity (AC)	Low (L)
   Privileges Required (PR)	None (N)
   User Interaction (UI)	Required (R)
   Scope (S)	Unchanged (U)
   Confidentiality (C)	None (N)
   Integrity (I)	None (N)
   Availability (A)	High (H)
   Temporal Score (Overall)	5.4
   Exploitability (E)	Unproven (U)
   Remediation Level (RL)	Official Fix (O)
   Report Confidence (RC)	Reasonable (R)

    
   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:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H/E:U/RL:O/RC:R&version=3.1
    
2. CVE-2020-0543: Special Register Buffer Data Sampling
    

   Base Score	5.5
   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)	None (N)
   Availability (A)	None (N)
   Temporal Score (Overall)	4.6
   Exploitability (E)	Unproven (U)
   Remediation Level (RL)	Official Fix (O)
   Report Confidence (RC)	Reasonable (R)

    
   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:N/A:N/E:U/RL:O/RC:R&version=3.1
    
3. CVE-2020-0549: Cache Eviction Sampling
    

   Base Score	5.5
   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)	None (N)
   Availability (A)	None (N)
   Temporal Score (Overall)	4.6
   Exploitability (E)	Unproven (U)
   Remediation Level (RL)	Official Fix (O)
   Report Confidence (RC)	Reasonable (R)

    
   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:N/A:N/E:U/RL:O/RC:R&version=3.1
    
4. CVE-2020-2781: Re-use of single TLS session for new connections
    

   Base Score	5.3
   Attack Vector (AV)	Network (N)
   Attack Complexity (AC)	Low (L)
   Privileges Required (PR)	None (N)
   User Interaction (UI)	None (N)
   Scope (S)	Unchanged (U)
   Confidentiality (C)	None (N)
   Integrity (I)	None (N)
   Availability (A)	Low (L)
   Temporal Score (Overall)	4.4
   Exploitability (E)	Unproven (U)
   Remediation Level (RL)	Official Fix (O)
   Report Confidence (RC)	Reasonable (R)

    
   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:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:R&version=3.1
    
5. CVE-2020-2830
    

   Base Score	5.3
   Attack Vector (AV)	Network (N)
   Attack Complexity (AC)	Low (L)
   Privileges Required (PR)	None (N)
   User Interaction (UI)	None (N)
   Scope (S)	Unchanged (U)
   Confidentiality (C)	None (N)
   Integrity (I)	None (N)
   Availability (A)	Low (L)
   Temporal Score (Overall)	4.4
   Exploitability (E)	Unproven (U)
   Remediation Level (RL)	Official Fix (O)
   Report Confidence (RC)	Reasonable (R)

    
   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:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:R&version=3.1

Where can I find a list of all Security Bulletins?
All Security Bulletins are published on our external PSIRT website at https://www.mcafee.com/us/threat-center/product-security-bulletins.aspx. To see Security Bulletins for McAfee Enterprise products on this website click Enterprise Security Bulletins. 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 McAfee?
If you have information about a security issue or vulnerability with a McAfee product, visit the McAfee PSIRT website for instructions at https://www.mcafee.com/us/threat-center/product-security-bulletins.aspx. To report an issue, click Report a Security Vulnerability.
 
How does McAfee 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 McAfee 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.
 
McAfee only publishes 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.
 
View our PSIRT policy on the McAfee PSIRT website at https://www.mcafee.com/us/threat-center/product-security-bulletins.aspx by clicking About PSIRT.
Resources
To contact Technical Support, log on to the ServicePortal and go to the Create a Service Request page at https://support.mcafee.com/ServicePortal/faces/serviceRequests/createSR:

• 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 required fields. Your password and logon instructions will be emailed to you.

Disclaimer
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