Advisory Details

January 18th, 2023

Microsoft Azure Service Fabric WAagent Exposure of Resource to Wrong Sphere Information Disclosure Vulnerability

ZDI-23-002
ZDI-CAN-18519

CVE ID CVE-2023-21531
CVSS SCORE 5.3, AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:N/A:N
AFFECTED VENDORS Microsoft
AFFECTED PRODUCTS Azure
VULNERABILITY DETAILS

This vulnerability allows local attackers to disclose sensitive information on Microsoft Azure. An attacker must first obtain the ability to execute high-privileged code within a container on the target system in order to exploit this vulnerability.

The specific flaw exists within the WAagent daemon. The issue results from insufficient verification of the origin of requests. An attacker can leverage this vulnerability to disclose stored credentials, leading to further compromise.

ADDITIONAL DETAILS Microsoft has issued an update to correct this vulnerability. More details can be found at:
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-21531
DISCLOSURE TIMELINE
  • 2022-09-20 - Vulnerability reported to vendor
  • 2023-01-18 - Coordinated public release of advisory
CREDIT David Fiser (Trend Micro - Project Nebula)
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