Out-of-bounds Read in VMware Cloud Foundation

CVE-2021-21995

OpenSLP as used in ESXi has a denial-of-service vulnerability due a heap out-of-bounds read issue. A malicious actor with network access to port 427 on ESXi may be able to trigger a heap out-of-bounds read in OpenSLP service resulting in a denial-of-service condition.

Vulnerability class: Buffer Overflow

EPSS: 0.010 (58.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

  • Vmware Cloud_foundation
  • Vmware Esxi — versions 6.5, 6.7, 7.0
  • N/a Vmware Esxi And Cloud Foundation — versions VMware ESXi(7.0 before ESXi70U2-17630552, 6.7 before ESXi670-202103101-SG, 6.5 before ESXi650-202107401-SG) and VMware Cloud Foundation (4.x, 3.x before 3.10.2)

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2021-21995?
CVE-2021-21995 is a high-severity vulnerability in VMware Cloud Foundation, classified under Out-of-bounds Read. CVSS score: 7.5/10. Published 2021-07-13.
How severe is CVE-2021-21995?
High severity. CVSS v3 base score is 7.5 out of 10.