VMwareVMSA-2021-0014VMware ESXi updates address authentication and denial of service vulnerabilities (CVE-2021-21994, CVE-2021-21995)
9.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
8.8 High
AI Score
Confidence
High
6.8 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:P/I:P/A:P
0.005 Low
EPSS
Percentile
75.9%
3a. ESXi SFCB improper authentication vulnerability (CVE-2021-21994)
SFCB (Small Footprint CIM Broker) as used in ESXi has an authentication bypass vulnerability.VMware has evaluated the severity of this issue to be in the Important severity range with a maximum CVSSv3 base score of 7.0.
3b. ESXi OpenSLP denial-of-service vulnerability (CVE-2021-21995)
OpenSLP as used in ESXi has a denial-of-service vulnerability due a heap out-of-bounds read issue. VMware has evaluated the severity of this issue to be in the Moderate severity range with a maximum CVSSv3 base score of 5.3.
References
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-21994
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-21995
docs.vmware.com/en/VMware-Cloud-Foundation/3.10.2/rn/VMware-Cloud-Foundation-3102-Release-Notes.html
docs.vmware.com/en/VMware-Cloud-Foundation/4.3/rn/VMware-Cloud-Foundation-43-Release-Notes.html
docs.vmware.com/en/VMware-vSphere/6.5/rn/esxi650-202107001.html
docs.vmware.com/en/VMware-vSphere/6.7/rn/esxi670-202103001.html
docs.vmware.com/en/VMware-vSphere/7.0/rn/vsphere-esxi-702-release-notes.html
my.vmware.com/group/vmware/patch
www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:L
www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Related
9.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
8.8 High
AI Score
Confidence
High
6.8 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:P/I:P/A:P
0.005 Low
EPSS
Percentile
75.9%