Advisory Details

February 7th, 2023

Microsoft Azure Machine Learning Service JWT Cleartext Storage of Credentials Information Disclosure Vulnerability

ZDI-23-097
ZDI-CAN-18565

CVE ID
CVSS SCORE 6.8, AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N
AFFECTED VENDORS Microsoft
AFFECTED PRODUCTS Azure
VULNERABILITY DETAILS

This vulnerability allows remote attackers to disclose sensitive information on Microsoft Azure. Authentication is required to exploit this vulnerability.

The specific flaw exists within the handling of JWT tokens within Azure Machine Learning Service workbooks. The issue results from storing sensitive information in plaintext. An attacker can leverage this vulnerability to disclose stored credentials, leading to further compromise.
ADDITIONAL DETAILS

Fixed in an online service update on October 31, 2022
DISCLOSURE TIMELINE
  • 2022-09-02 - Vulnerability reported to vendor
  • 2023-02-07 - Coordinated public release of advisory
CREDIT Nitesh Surana (@_niteshsurana) of Project Nebula, Trend Micro Research
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