Denial of service in Dell VxRail

1) Uncaught Exception

EUVDB-ID: #VU22319

Risk: Medium

CVSSv3.1: 5.5 [CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-5536

CWE-ID: CWE-248 - Uncaught Exception

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) condition on the target system.

The vulnerability exists due to uncaught exception in the shader functionality. A remote authenticated attacker can send a specially crafted shader file and cause a denial of service condition on their own VM.

Note: Exploitation of this issue require an attacker to have access to a virtual machine with 3D graphics enabled.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Dell EMC VxRail Appliance: before 4.7.301

External links

http://www.dell.com/support/kbdoc/en-us/000153611/dsa-2020-012-vxrail-security-update-for-vmware-esxi-denial-of-service-vulnerability

Q & A

Can this vulnerability be exploited remotely?

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

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected device in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

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