CVE-2021-21974

high

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.

References

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

Details

Source: MITRE

Published: 2021-02-24

Updated: 2022-06-02

Type: CWE-787

Risk Information

CVSS v2

Base Score: 5.8

Vector: AV:A/AC:L/Au:N/C:P/I:P/A:P

Impact Score: 6.4

Exploitability Score: 6.5

Severity: MEDIUM

CVSS v3

Base Score: 8.8

Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Impact Score: 5.9

Exploitability Score: 2.8

Severity: HIGH