Multiple vulnerabilities in Dell EMC VxRack System Flex

Published: 2022-11-11

Risk	Low
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2018-6981 CVE-2018-6982
CWE-ID	CWE-121
Exploitation vector	Local network
Public exploit	N/A
Vulnerable software Subscribe	Release Certification Matrix (RCM) Other software / Other software solutions
Vendor	Dell

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Stack-based buffer overflow

EUVDB-ID: #VU15786

Risk: Low

CVSSv3.1: 5.7 [CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-6981

CWE-ID: CWE-121 - Stack-based buffer overflow

Exploit availability: No

Description

The vulnerability allows an adjacent attacker to execute arbitrary code on the target system.

The weakness exists due to uninitialized stack memory usage in the vmxnet3 virtual network adapter. A remote attacker can trigger memory corruption if vmxnet3 is enabled and execute arbitrary code with elevated privileges.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Release Certification Matrix (RCM): before 3.3.3.1

External links

http://www.dell.com/support/kbdoc/en-us/000153789/dsa-2019-008-dell-emc-vxrack-system-flex-security-update-for-vmware-vsphere-vulnerabilities

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).

Is there known malware, which exploits this vulnerability?

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

2) Stack-based buffer overflow

EUVDB-ID: #VU15787