Medium severity · published Sep 23, 2021
CVE-2021-22017
VMware vCenter Server Improper Access Control
In wildKEV
5.3
CVSS
49.2%
EPSS
Yes
On KEV
Description
Rhttproxy as used in vCenter Server contains a vulnerability due to improper implementation of URI normalization. A malicious actor with network access to port 443 on vCenter Server may exploit this issue to bypass proxy leading to internal endpoints being accessed.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
Low
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)49.2% · higher than 99% of CVEs
Exploited in the wildYes
CISA KEVListed Jan 10, 2022
Federal remediation dueJan 24, 2022
Ransomware campaign useNot known
Affected products
Which versions
VS
vCenter Server · VMware
6.7 · source: NVD, KEV
VV
VMware vCenter Server, VMware Cloud Foundation ·
VMware vCenter Server(6.7 before 6.7 U3o and 6.5 before 6.5 U3q) and VMware Cloud Foundation 3.x before 3.10.2.2 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-22017
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-22017
CISA KEV catalogue
https://www.cisa.gov/known-exploited-vulnerabilities-catalog
x_refsource_MISC
https://www.vmware.com/security/advisories/VMSA-2021-0020.html
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