Vulnerability Details CVE-2021-21974
OpenSLP as used in ESXi (7.0 before ESXi70U1c-17325551, 6.7 before ESXi670-202102401-SG, 6.5 before ESXi650-202102101-SG) has a heap-overflow vulnerability. A malicious actor residing within the same network segment as ESXi who has access to port 427 may be able to trigger the heap-overflow issue in OpenSLP service resulting in remote code execution.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.445
EPSS Ranking 97.4%
CVSS Severity
CVSS v3 Score 8.8
CVSS v2 Score 5.8
References
- http://packetstormsecurity.com/files/162957/VMware-ESXi-OpenSLP-Heap-Overflow.html
- https://www.vmware.com/security/advisories/VMSA-2021-0002.html
- https://www.zerodayinitiative.com/advisories/ZDI-21-250/
- http://packetstormsecurity.com/files/162957/VMware-ESXi-OpenSLP-Heap-Overflow.html
- https://www.vmware.com/security/advisories/VMSA-2021-0002.html
- https://www.zerodayinitiative.com/advisories/ZDI-21-250/
Products affected by CVE-2021-21974
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cpe:2.3:a:vmware:cloud_foundation:3.0
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cpe:2.3:a:vmware:cloud_foundation:3.0.1
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cpe:2.3:a:vmware:cloud_foundation:3.0.1.1
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cpe:2.3:a:vmware:cloud_foundation:3.10
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cpe:2.3:a:vmware:cloud_foundation:3.10.1
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cpe:2.3:a:vmware:cloud_foundation:3.10.1.1
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cpe:2.3:a:vmware:cloud_foundation:3.5
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cpe:2.3:a:vmware:cloud_foundation:3.5.1
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cpe:2.3:a:vmware:cloud_foundation:3.7
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cpe:2.3:a:vmware:cloud_foundation:3.7.1
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cpe:2.3:a:vmware:cloud_foundation:3.7.2
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cpe:2.3:a:vmware:cloud_foundation:3.8
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cpe:2.3:a:vmware:cloud_foundation:3.8.1
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cpe:2.3:a:vmware:cloud_foundation:3.9
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cpe:2.3:a:vmware:cloud_foundation:3.9.1
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cpe:2.3:a:vmware:cloud_foundation:4.0
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cpe:2.3:a:vmware:cloud_foundation:4.0.1
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cpe:2.3:a:vmware:cloud_foundation:4.1
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cpe:2.3:a:vmware:cloud_foundation:4.1.0.1
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cpe:2.3:o:vmware:esxi:6.5
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cpe:2.3:o:vmware:esxi:6.7
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cpe:2.3:o:vmware:esxi:7.0.0