CVE-2023-20900

moderate-risk

Published 2023-08-31

A malicious actor that has been granted Guest Operation Privileges https://docs.vmware.com/en/VMware-vSphere/8.0/vsphere-security/GUID-6A952214-0E5E-4CCF-9D2A-90948FF643EC.html in a target virtual machine may be able to elevate their privileges if that target virtual machine has been assigned a more privileged Guest Alias https://vdc-download.vmware.com/vmwb-repository/dcr-public/d1902b0e-d479-46bf-8ac9-cee0e31e8ec0/07ce8dbd-db48-4261-9b8f-c6d3ad8ba472/vim.vm.guest.AliasManager.html .

Do I need to act?

0.60% chance of exploitation

EPSS score — low exploit probability

Not on CISA KEV list

No confirmed active exploitation reported to CISA

Patch status unknown

Check vendor advisories for fix availability and mitigation guidance

CVSS 7.1/10 High

ADJACENT_NETWORK / HIGH complexity

Affected Products (9)

Tools

Open Vm Tools

Fedora

Debian Linux

Ontap Select Deploy Administration Utility

Affected Vendors

Debian Vmware Fedoraproject Netapp

References (18)

Mailing List http://www.openwall.com/lists/oss-security/2023/08/31/1

Mailing List http://www.openwall.com/lists/oss-security/2023/10/27/1

Mailing List https://lists.debian.org/debian-lts-announce/2023/10/msg00000.html

Mailing List https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproje...

Third Party Advisory https://security.netapp.com/advisory/ntap-20231013-0002/

Third Party Advisory https://www.debian.org/security/2023/dsa-5493

Patch https://www.vmware.com/security/advisories/VMSA-2023-0019.html

Mailing List http://www.openwall.com/lists/oss-security/2023/08/31/1

Mailing List http://www.openwall.com/lists/oss-security/2023/10/27/1

Mailing List https://lists.debian.org/debian-lts-announce/2023/10/msg00000.html

Mailing List https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproje...

Third Party Advisory https://security.netapp.com/advisory/ntap-20231013-0002/

Third Party Advisory https://www.debian.org/security/2023/dsa-5493

Patch https://www.vmware.com/security/advisories/VMSA-2023-0019.html

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moderate-risk

Severity 18/34 · Moderate

Exploitability 2/34 · Minimal

Exposure 15/34 · Moderate