VMSA-2017-0013:VMware vCenter Server and Tools updates resolve multiple security vulnerabilities
23509
25 July 2017
25 July 2017
CLOSED
MEDIUM
CVE-2017-4921,CVE-2017-4922,CVE-2017-4923,CVE-2015-5191
VMSA-2017-0013
VMware vCenter Server and Tools updates resolve multiple security vulnerabilities
VMware Security Advisory
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
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
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
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
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&
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:
E-mail: [email protected]
PGP key at: https://kb.vmware.com/kb/1055
VMware Security Advisories
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Consolidated list of VMware Security Advisories
http://kb.vmware.com/kb/2078735
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