CVE-2020-3992
Last modified
CVE-2020-3992 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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.. CISA has confirmed active exploitation in the wild. EPSS estimates a 83.02% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Exploitation Status
This vulnerability is listed in CISA’s Known Exploited Vulnerabilities catalog, confirming active exploitation in the wild. Federal agencies must remediate by .
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Vmware | Cloud Foundation | >= 3.0, < 3.10.1.2 |
| Vmware | Cloud Foundation | >= 4.0, < 4.1.0.1 |
| Vmware | Esxi | 6.5 |
| Vmware | Esxi | 6.7 |
| Vmware | Esxi | 7.0.0 |
References
- https://www.vmware.com/security/advisories/VMSA-2020-0023.htmlPatch, Vendor Advisory
- https://www.zerodayinitiative.com/advisories/ZDI-20-1377/Third Party Advisory, VDB Entry
- https://www.zerodayinitiative.com/advisories/ZDI-20-1385/Third Party Advisory, VDB Entry
- https://www.vmware.com/security/advisories/VMSA-2020-0023.htmlPatch, Vendor Advisory
- https://www.zerodayinitiative.com/advisories/ZDI-20-1377/Third Party Advisory, VDB Entry
- https://www.zerodayinitiative.com/advisories/ZDI-20-1385/Third Party Advisory, VDB Entry
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-3992US Government Resource
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
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- CVE-2020-3993VMware NSX-T (3.x before 3.0.2, 2.5.x before 2.5.2.2.0) cont…5.9
- CVE-2020-3994VMware vCenter Server (6.7 before 6.7u3, 6.6 before 6.5u3k) …7.4
- CVE-2020-3995In VMware ESXi (6.7 before ESXi670-201908101-SG, 6.5 before …5.3
- CVE-2020-3996Velero (prior to 1.4.3 and 1.5.2) in some instances doesn’t …5.5
- CVE-2020-3997VMware Horizon Server (7.x prior to 7.10.3 or 7.13.0) contai…5.4
- CVE-2020-3998VMware Horizon Client for Windows (5.x prior to 5.5.0) conta…6.5
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