Advisory Details

April 16th, 2020

Cisco UCS Director ApplianceStorageUtil unzip Directory Traversal Remote Code Execution Vulnerability

CVE ID	CVE-2020-3239
CVSS SCORE	9.8, AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
AFFECTED VENDORS	Cisco
AFFECTED PRODUCTS	UCS Director
VULNERABILITY DETAILS	This vulnerability allows remote attackers to execute arbitrary code on affected installations of Cisco UCS Director. Authentication is not required to exploit this vulnerability. The specific flaw exists within the processing of zip files by the LargeFileUploadServlet endpoint. The issue results from the lack of proper validation of a user-supplied path prior to using it in file operations. An attacker can leverage this vulnerability to execute code in the context of root.
ADDITIONAL DETAILS	Cisco has issued an update to correct this vulnerability. More details can be found at: https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ucsd-mult-vulns-UNfpdW4E
DISCLOSURE TIMELINE	2019-12-20 - Vulnerability reported to vendor 2020-04-16 - Coordinated public release of advisory
CREDIT	Steven Seeley (mr_me) of Source Incite

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