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.
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 45.1%, higher than 99% of all known CVEs. Patch or mitigate before the next change window.
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.
- CVSS 3.1
- 8.8 HIGHCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 45.06% probability · 99th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-787
- Affected
- vmware/cloud foundation · vmware/esxi
- Source
- security@vmware.com
References
- http://packetstormsecurity.com/files/162957/VMware-ESXi-OpenSLP-Heap-Overflow.htmlExploit, Third Party Advisory, VDB Entry
- https://www.vmware.com/security/advisories/VMSA-2021-0002.htmlVendor Advisory
- https://www.zerodayinitiative.com/advisories/ZDI-21-250/Third Party Advisory, VDB Entry
- http://packetstormsecurity.com/files/162957/VMware-ESXi-OpenSLP-Heap-Overflow.htmlExploit, Third Party Advisory, VDB Entry
- https://www.vmware.com/security/advisories/VMSA-2021-0002.htmlVendor Advisory
- https://www.zerodayinitiative.com/advisories/ZDI-21-250/Third Party Advisory, VDB Entry
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.