SRC-2022-0021 : VMWare Cloud Foundation NSX-V XStream Deserialization of Untrusted Data Remote Code Execution Vulnerability
CVE ID: CVE-2021-39144
CVSS Score: 9.8, (/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
Affected Vendors: VMWare
Affected Products: Cloud Foundation NSX-V
This vulnerability allows remote attackers to execute arbitrary code on affected installations of VMWare Cloud Foundation NSX-V. Authentication is not required to exploit this vulnerability.
The specific flaw exists due to a vulnerable unmarshaller used to handle incoming java objects. The issue results from allowing attackers use dynamic proxies when providing marshalled java objects. An attacker can leverage this vulnerability to execute code in the context of root.
VMWare has issued an update to correct this vulnerability. More details can be found at: https://www.vmware.com/security/advisories/VMSA-2022-0027.html
2022-08-03 – Sent to VMWare PSIRT
2022-10-26 – Coordinated public release of advisory
Proof of Concept: /pocs/cve-2021-39144.py.txt
Credit: This vulnerability was discovered by Sina Kheirkhah and Steven Seeley of Source Incite