VMware Tools up to 10.3.25/12.2.x SAML Token Signature authentication replay

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.3$0-$5k0.00

Summaryinfo

A vulnerability categorized as critical has been discovered in VMware Tools up to 10.3.25/12.2.x. The affected element is an unknown function of the component SAML Token Signature Handler. Such manipulation leads to an unknown weakness. This vulnerability is uniquely identified as CVE-2023-20900. The attack can only be initiated within the local network. No exploit exists. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in VMware Tools up to 10.3.25/12.2.x and classified as critical. Affected by this issue is an unknown functionality of the component SAML Token Signature Handler. Using CWE to declare the problem leads to CWE-294. A capture-replay flaw exists when the design of the product makes it possible for a malicious user to sniff network traffic and bypass authentication by replaying it to the server in question to the same effect as the original message (or with minor changes). Impacted is confidentiality, integrity, and availability.

The weakness was disclosed 08/31/2023 as VMSA-2023-0019. The advisory is available at vmware.com. This vulnerability is handled as CVE-2023-20900 since 11/01/2022. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1040 by the MITRE ATT&CK project.

The vulnerability scanner Nessus provides a plugin with the ID 276420 (TencentOS Server 4: open-vm-tools (TSSA-2024:0041)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 10.3.26 or 12.3.0 eliminates this vulnerability. The upgrade is hosted for download at docs.vmware.com.

The vulnerability is also documented in the vulnerability database at Tenable (276420). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 7.3

VulDB Base Score: 7.5
VulDB Temp Score: 7.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA Base Score: 7.5
CNA Vector (VMware): 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Authentication replay
CWE: CWE-294 / CWE-287
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 276420
Nessus Name: TencentOS Server 4: open-vm-tools (TSSA-2024:0041)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Tools 10.3.26/12.3.0

Timelineinfo

11/01/2022 🔍
08/31/2023 +302 days 🔍
08/31/2023 +0 days 🔍
11/21/2025 +813 days 🔍

Sourcesinfo

Vendor: vmware.com

Advisory: VMSA-2023-0019
Status: Confirmed

CVE: CVE-2023-20900 (🔍)
GCVE (CVE): GCVE-0-2023-20900
GCVE (VulDB): GCVE-100-238442
scip Labs: https://www.scip.ch/en/?labs.20060413

Entryinfo

Created: 08/31/2023 11:00
Updated: 11/21/2025 21:36
Changes: 08/31/2023 11:00 (40), 09/27/2023 14:07 (1), 09/27/2023 14:08 (12), 11/21/2025 21:36 (17)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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