CVE-2021-21974

Sep 3, 2024

Published Date: 2021-02-24T17:15Z

Last Modified: 2022-06-02T14:41Z

CVSS Score: 8.8 (HIGH)

EPSS Score: 93.14%

Risk Score: 6.44 (HIGH)

Risk Score based on CVSS score and EPSS. This score is for reference purposes and is not internationally recognized.

CVSS: 8.8 | EPSS: 93.14%

NVD Links:

https://nvd.nist.gov/vuln/detail/CVE-2021-21974

Description: 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.

Mitre ATT&CK Technical v15.1

None

Technical Analysis & Mitigation Measures

Reference Links

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

Vendor - Produce - Version

cloud_foundation - vmware, cloud_foundation - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware, esxi - vmware

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