SRC-2022-0022 : VMWare Cloud Foundation NSX-V VsmUsernamePasswordAuthenticationFilter parseUsernamePasswordFromXML XML External Entity Processing Information Disclosure Vulnerability
CVE ID: CVE-2022-31678
CVSS Score: 5.3, (/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N)
Affected Vendors: VMWare
Affected Products: Cloud Foundation NSX-V
This vulnerability allows remote attackers to disclose sensitive information on affected installations of VMWare Cloud Foundation NSX-V. Authentication is not required to exploit this vulnerability.
The specific flaw exists within the VsmUsernamePasswordAuthenticationFilter class. Due to the improper restriction of XML External Entity (XXE) references, a crafted XML request specifying a URI causes the XML parser to access the URI and embed the contents back into the XML document for further processing. An attacker can leverage this vulnerability to disclose files 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-2022-0022.html
2022-08-03 – Sent to VMWare PSIRT
2022-10-26 – Coordinated public release of advisory
Credit: This vulnerability was discovered by Sina Kheirkhah and Steven Seeley of Source Incite