#VU82520 Improper Authorization in VMware Tools - CVE-2023-34058

Vulnerability identifier: #VU82520

Vulnerability 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

Exploitation vector: Local network

Exploit availability: No

Vulnerable software:
VMware Tools
Client/Desktop applications / Other client software

Vendor: VMware, Inc

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

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

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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.