CVE-2023-36052
📋 TL;DR
CVE-2023-36052 is an information disclosure vulnerability in Azure CLI's REST command that allows authenticated users to access sensitive information from other Azure resources. This affects organizations using Azure CLI with REST commands to manage Azure resources. The vulnerability exposes data that should be restricted by proper authorization checks.
💻 Affected Systems
- Azure CLI
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Attackers could access sensitive Azure resource data including configuration details, secrets, and credentials, potentially leading to lateral movement and full cloud environment compromise.
Likely Case
Unauthorized access to sensitive Azure resource metadata and configuration information, enabling reconnaissance and privilege escalation opportunities.
If Mitigated
Limited exposure with proper network segmentation and minimal impact if only non-sensitive resources are accessible.
🎯 Exploit Status
Exploitation requires authenticated access to Azure CLI. The vulnerability is in the REST command implementation.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Azure CLI 2.53.1 and later
Vendor Advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-36052
Restart Required: No
Instructions:
1. Update Azure CLI using: az upgrade --yes 2. Verify version with: az --version 3. Ensure version is 2.53.1 or higher
🔧 Temporary Workarounds
Disable REST command usage
allRestrict or monitor usage of Azure CLI REST commands in your environment
# Monitor for REST command usage: az rest
Implement least privilege access
allApply strict RBAC policies to limit Azure resource access
# Review and restrict Azure role assignments
🧯 If You Can't Patch
- Implement strict monitoring and alerting for Azure CLI REST command usage
- Apply network segmentation and restrict Azure CLI access to trusted networks only
🔍 How to Verify
Check if Vulnerable:
Run 'az --version' and check if version is below 2.53.1Check Version:
az --versionVerify Fix Applied:
Run 'az --version' and confirm version is 2.53.1 or higher📡 Detection & Monitoring
Log Indicators:
- Unusual Azure CLI REST command usage patterns
- Multiple failed authorization attempts followed by REST commands
Network Indicators:
- Azure CLI traffic to unexpected Azure resource endpoints
- Unusual volume of REST API calls from user accounts
SIEM Query:
AzureActivity | where OperationNameValue contains 'REST' and Caller contains 'az'