CVE-2023-20900 (GCVE-0-2023-20900)

Vulnerability from cvelistv5 – Published: 2023-08-31 09:45 – Updated: 2024-08-02 09:21
VLAI
Summary
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 .
Severity
7.1 (High)
CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
  • SAML Token Signature Bypass vulnerability
Assigner
References
Impacted products
Vendor Product Version
n/a VMware Tools Affected: 12.x.x
Affected: 11.x.x
Affected: 10.3.x
n/a VMware Tools Affected: 10.3.x
n/a VMware Tools (open-vm-tools) Affected: 12.x.x
Affected: 11.x.x
Affected: 10.3.x
Show details on NVD website
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    "nvd": "{\"cve\":{\"id\":\"CVE-2023-20900\",\"sourceIdentifier\":\"security@vmware.com\",\"published\":\"2023-08-31T10:15:08.247\",\"lastModified\":\"2026-06-17T05:31:08.857\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"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 \u00a0in 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 .\"},{\"lang\":\"es\",\"value\":\"Un actor malicioso al que se le han otorgado Privilegios de Operaci\u00f3n de Invitado https://docs.vmware.com/en/VMware-vSphere/8.0/vsphere-security/GUID-6A952214-0E5E-4CCF-9D2A-90948FF643EC.html en una m\u00e1quina virtual de destino es posible que pueda elevar sus privilegios si a esa m\u00e1quina virtual de destino se le ha asignado un Alias de Invitado m\u00e1s privilegiado https://vdc-download.vmware.com/vmwb-repository/dcr-public/d1902b0e-d479-46bf-8ac9-cee0e31e8ec0/ 07ce8dbd-db48-4261-9b8f-c6d3ad8ba472/vim.vm.guest.AliasManager.html.\"}],\"affected\":[{\"source\":\"security@vmware.com\",\"affectedData\":[{\"vendor\":\"n/a\",\"product\":\"VMware Tools\",\"defaultStatus\":\"unaffected\",\"platforms\":[\"Windows\"],\"versions\":[{\"version\":\"12.x.x\",\"status\":\"affected\"},{\"version\":\"11.x.x\",\"status\":\"affected\"},{\"version\":\"10.3.x\",\"status\":\"affected\"}]},{\"vendor\":\"n/a\",\"product\":\"VMware Tools\",\"defaultStatus\":\"unaffected\",\"platforms\":[\"Linux\"],\"versions\":[{\"version\":\"10.3.x\",\"status\":\"affected\"}]},{\"vendor\":\"n/a\",\"product\":\"VMware Tools 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Advisory\"]},{\"url\":\"https://www.vmware.com/security/advisories/VMSA-2023-0019.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\",\"Vendor Advisory\"]}]}}",
    "redhat_vex": {
      "aggregate_severity": "Important",
      "current_release_date": "2025-11-21T14:42:39+00:00",
      "cve": "CVE-2023-20900",
      "id": "CVE-2023-20900",
      "initial_release_date": "2023-08-31T00:00:00+00:00",
      "product_status:fixed": "165",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "open-vm-tools: SAML token signature bypass",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2023/cve-2023-20900.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "important",
      "current_release_date": "2026-07-31T01:29:19Z",
      "cve": "CVE-2023-20900",
      "id": "CVE-2023-20900",
      "initial_release_date": "2025-02-14T06:43:34Z",
      "product_status:known_affected": "47",
      "product_status:recommended": "336",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2023-20900",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2023-20900.json",
      "version": "19"
    }
  }
}



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Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.