Advisory Details

January 3rd, 2020

Cisco Data Center Network Manager getInventoryIslList XML External Entity Processing Information Disclosure Vulnerability

ZDI-20-114
ZDI-CAN-9247

CVE ID CVE-2019-15983
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 Data Center Network Manager
VULNERABILITY DETAILS

This vulnerability allows remote attackers to disclose sensitive information on affected installations of Cisco Data Center Network Manager. Authentication is not required to exploit this vulnerability.

The specific flaw exists within the processing of requests to the getInventoryIslList SOAP endpoint of DashboardWSService/DashboardWS. Due to the improper restriction of XML External Entity (XXE) references, a specially 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 could leverage this vulnerability to disclose stored credentials, leading to further compromise.

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-20200102-dcnm-xml-ext-entity
DISCLOSURE TIMELINE
  • 2019-10-22 - Vulnerability reported to vendor
  • 2020-01-03 - Coordinated public release of advisory
CREDIT Steven Seeley (mr_me) of Source Incite
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