Advisory Details

October 28th, 2020

Micro Focus Operations Bridge Manager RegistrationServlet Deserialization Of Untrusted Data Privilege Escalation Vulnerability

ZDI-20-1327
ZDI-CAN-11203

CVE ID CVE-2020-11853
CVSS SCORE 8.8, AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
AFFECTED VENDORS Micro Focus
AFFECTED PRODUCTS Operations Bridge Manager
VULNERABILITY DETAILS

This vulnerability allows remote attackers to escalate privileges on affected installations of Micro Focus Operations Bridge Manager. Authentication is required to exploit this vulnerability.

The specific flaw exists within the RegistrationServlet endpoint. 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 escalate privileges and execute code in the context of SYSTEM.

ADDITIONAL DETAILS Micro Focus has issued an update to correct this vulnerability. More details can be found at:
https://softwaresupport.softwaregrp.com/doc/KM03747658
DISCLOSURE TIMELINE
  • 2020-08-07 - Vulnerability reported to vendor
  • 2020-10-28 - Coordinated public release of advisory
CREDIT Pedro Ribeiro (pedrib@gmail.com | @pedrib1337) from Agile Information Security
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