Advisory Details

June 5th, 2020

IBM WebSphere Application Server IIOP Deserialization of Untrusted Data Information Disclosure Vulnerability

ZDI-20-690
ZDI-CAN-10756

CVE ID CVE-2020-4449
CVSS SCORE 7.5, AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
AFFECTED VENDORS IBM
AFFECTED PRODUCTS WebSphere
VULNERABILITY DETAILS

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

The specific flaw exists within the handling of the IIOP protocol. 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 disclose information in the context of root.

ADDITIONAL DETAILS IBM has issued an update to correct this vulnerability. More details can be found at:
https://www.ibm.com/support/pages/node/6220296
DISCLOSURE TIMELINE
  • 2020-04-17 - Vulnerability reported to vendor
  • 2020-06-05 - Coordinated public release of advisory
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