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List:       oss-security
Subject:    [oss-security] CVE-2023-34058 - SAML Token Signature Bypass in open-vm-tools
From:       VMware Security Response Center <security () vmware ! com>
Date:       2023-10-27 3:43:27
Message-ID: 82C70BE4-B22A-45C5-A80A-ECD7F934D93D () vmware ! com
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Description

==============================================================

CVE-2023-34058: open-vm-tools contains a SAML token signature bypass vulnerability. VMware has \
evaluated the severity of this issue to be in the Important severity range with a maximum \
CVSSv3 base score of 7.5 - CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H



Known Attack Vectors

==============================================================

A malicious actor 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.



Notes

==============================================================

Please note that while the description and known attack vectors are very similar to \
CVE-2023-20900, CVE-2023-34058 has a different root cause that must be addressed.



Remediation

==============================================================

The following patch is provided for all open-vm-tools releases 11.0.0 through 12.3.0



https://github.com/vmware/open-vm-tools/blob/CVE-2023-34058.patch/CVE-2023-34058.patch


The patches have been tested against the above open-vm-tools releases.  Each applies cleanly \
with:



git am for a git repository.

patch -p2 in the top directory of an open-vm-tools source tree.



--------------

Edward Hawkins

Staff-2 Technical Program Manager

security@vmware.com<mailto:security@vmware.com>



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