Multiple vulnerabilities in VMware vCenter Server Appliance

Published: 2019-10-30

Risk	Medium
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2019-5537 CVE-2019-5538
CWE-ID	CWE-200
Exploitation vector	Network
Public exploit	N/A
Vulnerable software Subscribe	vCenter Server Appliance Client/Desktop applications / Virtualization software
Vendor	VMware, Inc

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Information disclosure

EUVDB-ID: #VU22422

Risk: Medium

CVSSv3.1: 5.9 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-5537

CWE-ID: CWE-200 - Information exposure

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to a lack of certificate validation during the File-Based Backup and Restore operations. A remote attacker with man-in-the-middle positioning between vCenter Server Appliance and a backup target can intercept sensitive data in transit over FTPS and HTTPS and gain unauthorized access to sensitive information on the system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

vCenter Server Appliance: 6.5 - 6.7

External links

http://www.vmware.com/security/advisories/VMSA-2019-0018.html

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to open a a specially crafted file.

Is there known malware, which exploits this vulnerability?

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

2) Information disclosure

EUVDB-ID: #VU22423