Advisory Details

August 18th, 2021

Cisco UCS Director AMF XML External Entity Information Disclosure Vulnerability

CVE ID
CVSS SCORE	7.5, AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
AFFECTED VENDORS	Cisco
AFFECTED PRODUCTS	UCS Director
VULNERABILITY DETAILS	This vulnerability allows remote attackers to disclose sensitive information on affected installations of Cisco UCS Director. Authentication is not required to exploit this vulnerability. The specific flaw exists within the amf endpoint, which listens on TCP port 443 by default. Due to the improper restriction of XML External Entity (XXE) references, a crafted document 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 information in the context of the ucsdu user.
ADDITIONAL DETAILS	Fixed in version 6.8.0
DISCLOSURE TIMELINE	2021-03-26 - Vulnerability reported to vendor 2021-08-18 - Coordinated public release of advisory
CREDIT	peterjson of RedTeam@VNG Corporation

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