Authentication bypass in VMware vCenter Server



Risk Low
Patch available NO
Number of vulnerabilities 1
CVE-ID CVE-2017-4919
CWE-ID CWE-264
Exploitation vector Network
Public exploit N/A
Vulnerable software
 vCenter Server
Server applications / Virtualization software

Vendor VMware, Inc

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Authentication bypass

EUVDB-ID: #VU7642

Risk: Low

CVSSv4.0: 6.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2017-4919

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: No

Description

The vulnerability allows a remote authenticated attacker to bypass authentication on the target system.

The weakness exists due to improper security restrictions. A remote attacker acting as a vSphere user can use the VIX API to bypass additional authentication restrictions and gain access to a Guest Operating System (GuestOS).

Mitigation

As a temporary solution the vendor has suggested the following workaround:

https://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&...


Vulnerable software versions

vCenter Server: 5.5U1 - 6.5.0

CPE2.3 External links

https://www.vmware.com/security/advisories/VMSA-2017-0012.html


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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