CVE-2021-21991

The vCenter Server contains a local privilege escalation vulnerability due to the way it handles session tokens. A malicious actor with non-administrative user access on vCenter Server host may exploit this issue to escalate privileges to Administrator on the vSphere Client (HTML5) or vCenter Server vSphere Web Client (FLEX/Flash).
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
7.8 HIGH
LOCAL
LOW
LOW
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
vmwareCNA
---
---
CVEADP
---
---
Base Score
CVSS 3.x
EPSS Score
Percentile: 40%
VendorProductVersion
vmwarecloud_foundation
3.0 ≤
𝑥
< 3.10.2.2
vmwarecloud_foundation
4.0 ≤
𝑥
< 4.3
vmwarevcenter_server
6.5
vmwarevcenter_server
6.5:a
vmwarevcenter_server
6.5:b
vmwarevcenter_server
6.5:c
vmwarevcenter_server
6.5:d
vmwarevcenter_server
6.5:e
vmwarevcenter_server
6.5:f
vmwarevcenter_server
6.5:update1
vmwarevcenter_server
6.5:update1b
vmwarevcenter_server
6.5:update1c
vmwarevcenter_server
6.5:update1d
vmwarevcenter_server
6.5:update1e
vmwarevcenter_server
6.5:update1g
vmwarevcenter_server
6.5:update2
vmwarevcenter_server
6.5:update2b
vmwarevcenter_server
6.5:update2c
vmwarevcenter_server
6.5:update2d
vmwarevcenter_server
6.5:update2g
vmwarevcenter_server
6.5:update3
vmwarevcenter_server
6.5:update3d
vmwarevcenter_server
6.5:update3f
vmwarevcenter_server
6.5:update3k
vmwarevcenter_server
6.5:update3n
vmwarevcenter_server
6.5:update3p
vmwarevcenter_server
6.7
vmwarevcenter_server
6.7
vmwarevcenter_server
6.7:a
vmwarevcenter_server
6.7:b
vmwarevcenter_server
6.7:d
vmwarevcenter_server
6.7:update1
vmwarevcenter_server
6.7:update1b
vmwarevcenter_server
6.7:update2
vmwarevcenter_server
6.7:update2a
vmwarevcenter_server
6.7:update2c
vmwarevcenter_server
6.7:update3
vmwarevcenter_server
6.7:update3a
vmwarevcenter_server
6.7:update3b
vmwarevcenter_server
6.7:update3f
vmwarevcenter_server
6.7:update3g
vmwarevcenter_server
6.7:update3j
vmwarevcenter_server
6.7:update3l
vmwarevcenter_server
6.7:update3m
vmwarevcenter_server
6.7:update3n
vmwarevcenter_server
7.0
vmwarevcenter_server
7.0:a
vmwarevcenter_server
7.0:b
vmwarevcenter_server
7.0:c
vmwarevcenter_server
7.0:d
vmwarevcenter_server
7.0:update1
vmwarevcenter_server
7.0:update1a
vmwarevcenter_server
7.0:update1c
vmwarevcenter_server
7.0:update1d
vmwarevcenter_server
7.0:update2
vmwarevcenter_server
7.0:update2a
vmwarevcenter_server
7.0:update2b
𝑥
= Vulnerable software versions
References
https://www.vmware.com/security/advisories/VMSA-2021-0020.html
https://www.vmware.com/security/advisories/VMSA-2021-0020.html