Advisory Details

June 5th, 2020

IBM WebSphere UploadFileArgument Deserialization of Untrusted Data Remote Code Execution Vulnerability

ZDI-20-688
ZDI-CAN-10732

CVE ID CVE-2020-4448
CVSS SCORE 9.8, (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
AFFECTED VENDORS IBM
AFFECTED PRODUCTS WebSphere
VULNERABILITY DETAILS

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

The specific flaw exists within the BroadcastMessageManager class. 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 SYSTEM.

ADDITIONAL DETAILS IBM has issued an update to correct this vulnerability. More details can be found at:
https://www.ibm.com/support/pages/node/6220336
DISCLOSURE TIMELINE
  • 2020-04-17 - Vulnerability reported to vendor
  • 2020-06-05 - Coordinated public release of advisory
CREDIT b0yd
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