CVE-2020-3992
CriticalActively exploited (CISA KEV)Known to be used in ransomware campaigns
Description
OpenSLP as used in VMware ESXi (7.0 before ESXi_7.0.1-0.0.16850804, 6.7 before ESXi670-202010401-SG, 6.5 before ESXi650-202010401-SG) has a use-after-free issue. A malicious actor residing in the management network who has access to port 427 on an ESXi machine may be able to trigger a use-after-free in the OpenSLP service resulting in remote code execution.
SeverityCritical
CVSS9.8
Exploit probability—
Product
VMware ESXi
PublishedOct 20, 2020
First seenOct 20, 2020
Added to KEVNov 3, 2021
Weakness typeCWE-416Use after free
How to fix
CISA required action
Apply updates per vendor instructions.
CISA due date: May 3, 2022Update
- vmware cloud_foundation3.10.1.2, 4.1.0.1 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| vmware esxi | 6.5, 6.7 | — |
| vmware cloud_foundation | 3.0 ≤ v < 3.10.1.2, 4.0 ≤ v < 4.1.0.1 | 3.10.1.2, 4.1.0.1 |
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