Advisory Details

July 8th, 2020

Veeam ONE SSRSReport GetCustomElementText XML External Entity Processing Information Disclosure Vulnerability

ZDI-20-821
ZDI-CAN-10709

CVE ID CVE-2020-15418
CVSS SCORE 7.5, (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N)
AFFECTED VENDORS Veeam
AFFECTED PRODUCTS ONE
VULNERABILITY DETAILS

This vulnerability allows remote attackers to disclose sensitive information on affected installations of Veeam ONE. Authentication is not required to exploit this vulnerability.

The specific flaw exists within the SSRSReport class. 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 can leverage this vulnerability to disclose file contents in the context of SYSTEM.

ADDITIONAL DETAILS Veeam has issued an update to correct this vulnerability. More details can be found at:
https://www.veeam.com/kb3221
DISCLOSURE TIMELINE
  • 2020-05-14 - Vulnerability reported to vendor
  • 2020-07-08 - Coordinated public release of advisory
CREDIT rgod
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