VMSA-2017-0013

VMware vCenter Server and Tools updates resolve multiple  security vulnerabilities

VMware Security Advisory
 
VMware Security Advisory Advisory ID:
  VMSA-2017-0013
VMware Security Advisory Severity:
  Moderate
VMware Security Advisory Synopsis:
  VMware vCenter Server and Tools updates resolve multiple security vulnerabilities
VMware Security Advisory Issue date:
  2017-07-27
VMware Security Advisory Updated on:
  2017-07-27 (Initial Advisory)
VMware Security Advisory CVE numbers:
  CVE-2017-4921, CVE-2017-4922, CVE-2017-4923, CVE-2015-5191
 
1. Summary

VMware vCenter Server and Tools updates resolve multiple security vulnerabilities

2. Relevant Products
  • VMware vCenter Server  
  • VMware Tools
3. Problem Description

a. Insecure library loading through LD_LIBRARY_PATH 

 

VMware vCenter Server contains an insecure library loading issue that occurs due to the use of LD_LIBRARY_PATH variable in an unsafe manner. Successful exploitation of this issue may allow unprivileged host users to load a shared library that may lead to privilege escalation.      

 

Note: In order to exploit this issue an attacker should be able to trick the admin to execute wrapper scripts from a world writable directory.      

 

VMware would like to thank Thorsten Tüllmann, researcher at Karlsruhe Institute of Technology for reporting this issue to us.     

 

The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the identifier CVE-2017-4921 to this issue.

 

Column 5 of the following table lists the action required to remediate the vulnerability in each release, if a solution is available.

VMware Product
Product Version
Running on
Severity
Replace with/ Apply Patch
Workaround
VMware Product vCenter Server
Product Version 6.5
Running on VA
Severity Moderate
Replace with/ Apply Patch 6.5 U1
Workaround None
VMware Product vCenter Server
Product Version 6.5
Running on Windows
Severity N/A
Replace with/ Apply Patch Not affected
Workaround N/A
VMware Product vCenter Server
Product Version 6.0
Running on Any
Severity N/A
Replace with/ Apply Patch Not affected
Workaround N/A
VMware Product vCenter Server
Product Version 5.5
Running on Any
Severity N/A
Replace with/ Apply Patch Not affected
Workaround N/A

 

 

b. Information disclosure via service startup script

 

VMware vCenter Server contains an information disclosure issue due to the service startup script using world writable directories as temporary storage for critical information. Successful exploitation of this issue may allow unprivileged host users to access certain critical information when the service gets restarted.     

 

VMware would like to thank Thorsten Tüllmann, researcher at Karlsruhe Institute of Technology for reporting this issue to us.     

 

The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the identifier CVE-2017-4922 to this issue.

 

Column 5 of the following table lists the action required to remediate the vulnerability in each release, if a solution is available.

VMware Product
Product Version
Running on
Severity
Replace with/ Apply Patch
Workaround
VMware Product vCenter Server
Product Version 6.5
Running on VA
Severity Moderate
Replace with/ Apply Patch 6.5 U1
Workaround None
VMware Product vCenter Server
Product Version 6.5
Running on Windows
Severity N/A
Replace with/ Apply Patch Not affected
Workaround N/A
VMware Product vCenter Server
Product Version 6.0
Running on Any
Severity N/A
Replace with/ Apply Patch Not affected
Workaround N/A
VMware Product vCenter Server
Product Version 5.5
Running on Any
Severity N/A
Replace with/ Apply Patch Not affected
Workaround N/A

 

 

c. Information disclosure via vCenter Server Appliance file-based backup feature

 

VMware vCenter Server contains an information disclosure vulnerability. This issue may allow plaintext credentials to be obtained when using the vCenter Server Appliance file-based backup feature.      

 

VMware would like to thank Joe Womack of Expedia for reporting this issue to us.

     

The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the identifier CVE-2017-4923 to this issue.

 

Column 5 of the following table lists the action required to remediate the vulnerability in each release, if a solution is available.

VMware Product
Product Version
Running on
Severity
Replace with/ Apply Patch
Workaround
VMware Product vCenter Server
Product Version 6.5
Running on VA
Severity Moderate
Replace with/ Apply Patch 6.5 U1
Workaround None
VMware Product vCenter Server
Product Version 6.5
Running on Windows
Severity N/A
Replace with/ Apply Patch Not affected
Workaround N/A
VMware Product vCenter Server
Product Version 6.0
Running on Any
Severity N/A
Replace with/ Apply Patch Not affected
Workaround N/A
VMware Product vCenter Server
Product Version 5.5
Running on Any
Severity N/A
Replace with/ Apply Patch Not affected
Workaround N/A

 

 

d. Local privilege escalation in VMware Tools

 

VMware Tools contains multiple file system races in libDeployPkg, related to the use of hard-coded paths under /tmp. Successful exploitation of this issue may result in a local privilege escalation.      

 

VMware would like to thank Florian Weimer and Kurt Seifried of Red Hat Product Security for reporting this issue to us.     

 

The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the identifier CVE-2015-5191 to this issue.

 

Column 5 of the following table lists the action required to remediate the vulnerability in each release, if a solution is available.

VMware Product
Product Version
Running on
Severity
Replace with/ Apply Patch
Workaround
VMware Product VMware Tools
Product Version 10.0.x, 9.x
Running on Linux
Severity Moderate
Replace with/ Apply Patch 10.0.9 and above
Workaround None

 

 

4. Solution

 

Please review the patch/release notes for your product and version and verify the checksum of your downloaded file.


VMware vCenter Server 6.5 U1 

Downloads:

https://my.vmware.com/web/vmware/details?downloadGroup=VC65U1&productId=614&rPId=17343

Documentation:

https://docs.vmware.com/en/VMware-vSphere/index.html

 

VMware Tools 10.0.9

Downloads and Documentation:  

        https://my.vmware.com/web/vmware/details?productId=491&

        downloadGroup=VMTOOLS1009

 

5. References

 

          http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-4921  

          http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-4922  

          http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-4923  

          http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-5191

    

6. Change log

 

2017-07-27 VMSA-2017-0013  

Initial security advisory in conjunction with the release of VMware vCenter Server 6.5 U1 on 2017-07-27.

 

7. Contact

 

E-mail list for product security notifications and announcements:

http://lists.vmware.com/cgi-bin/mailman/listinfo/security-announce

 

This Security Advisory is posted to the following lists:

security-announce@lists.vmware.com

bugtraq@securityfocus.com

fulldisclosure@seclists.org

 

E-mail: security@vmware.com

PGP key at: https://kb.vmware.com/kb/1055

 

VMware Security Advisories

http://www.vmware.com/security/advisories

 

Consolidated list of VMware Security Advisories

http://kb.vmware.com/kb/2078735

 

VMware Security Response Policy

https://www.vmware.com/support/policies/security_response.html

 

VMware Lifecycle Support Phases

https://www.vmware.com/support/policies/lifecycle.html

 

VMware Security & Compliance Blog  

https://blogs.vmware.com/security

 

Twitter

https://twitter.com/VMwareSRC

 

Copyright 2017 VMware Inc. All rights reserved.

Sign up for Security Advisories

Enter your email address: