SAML token signature bypass in VMware Tools



Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2023-34058
CWE-ID CWE-285
Exploitation vector Local network
Public exploit N/A
Vulnerable software
 VMware Tools
Client/Desktop applications / Other client software

Vendor VMware, Inc

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Improper Authorization

EUVDB-ID: #VU82520

Risk: Medium

CVSSv4.0: 5.2 [CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2023-34058

CWE-ID: CWE-285 - Improper Authorization

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise the affected system.

The vulnerability exists due to an error when handling SAML token signature. A remote attacker that has been granted Guest Operation Privileges 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.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

VMware Tools: 10.3.0 - 12.3.0

CPE2.3 External links

https://www.vmware.com/security/advisories/VMSA-2023-0024.html


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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