Out-of-bounds write in VMware ESXi and Horizon DaaS - CVE-2019-5544
Published: December 6, 2019 / Updated: February 20, 2022
Vulnerability identifier: #VU23432
CSH Severity: High
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:A/U:Amber
CVE-ID: CVE-2019-5544
CWE-ID: CWE-787
Exploitation vector: Remote access
Exploit availability:
The vulnerability is being exploited in the wild
Vendor: VMware, Inc
Affected software:
VMware ESXi
Horizon DaaS
VMware ESXi
Horizon DaaS
Detailed vulnerability description
The vulnerability allows a remote attacker to compromise vulnerable system.
The vulnerability exists due to a boundary error when processing untrusted input in OpenSLP. A remote attacker with network access to port 427 on an ESXi host or on any Horizon DaaS management appliance can overwrite the heap of the OpenSLP service, trigger out-of-bounds write and execute arbitrary code on the target system.
Note: This vulnerability affects Horizon DaaS 8.x
How to mitigate CVE-2019-5544
Install updates from vendor's website.