Vulnerability identifier: #VU50900
Vulnerability risk: High
CVSSv3.1: 8.4 [CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:H/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-122
Exploitation vector: Local network
Exploit availability: Yes
Vulnerable software:
VMware ESXi
Operating systems & Components /
Operating system
Vendor: VMware, Inc
Description
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error when processing packets within the OpenSLP service. A remote non-authenticated attacker on the local network can send specially crafted SLP messages to port 427/tcp, trigger a heap-based buffer overflow and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Note, the vulnerability is being actively exploited in the wild.
Mitigation
Install updates from vendor's website.
Vulnerable software versions
VMware ESXi: 6.5 - ESXi_7.0.1-0.0.16850804
External links
http://www.vmware.com/security/advisories/VMSA-2021-0002.html
http://kb.vmware.com/s/article/76372
http://www.zerodayinitiative.com/advisories/ZDI-21-250/
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?
Yes. This vulnerability is being exploited in the wild.