Advisory Details

July 22nd, 2021

Oracle Business Intelligence BIRemotingServlet Deserialization of Untrusted Data Remote Code Execution Vulnerability

ZDI-21-885
ZDI-CAN-13036

CVE ID CVE-2021-2456
CVSS SCORE 9.8, (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
AFFECTED VENDORS Oracle
AFFECTED PRODUCTS Business Intelligence
VULNERABILITY DETAILS

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Oracle Business Intelligence. Authentication is not required to exploit this vulnerability.

The specific flaw exists within BIRemotingServlet. The issue results from the lack of proper validation of user-supplied data, which can result in deserialization of untrusted data. An attacker can leverage this vulnerability to execute code in the context of Administrator.

ADDITIONAL DETAILS Oracle has issued an update to correct this vulnerability. More details can be found at:
https://www.oracle.com/security-alerts/cpujul2021.html
DISCLOSURE TIMELINE
  • 2021-03-18 - Vulnerability reported to vendor
  • 2021-07-22 - Coordinated public release of advisory
CREDIT peterjson of RedTeam@VNG Corporation
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