CVE-2024-29993

8.8 HIGH

📋 TL;DR

This vulnerability in Azure CycleCloud allows authenticated users to elevate their privileges to administrator level, potentially gaining full control over the CycleCloud instance. It affects organizations using Azure CycleCloud for HPC cluster management.

💻 Affected Systems

Products:
  • Azure CycleCloud
Versions: All versions prior to the fix
Operating Systems: Linux
Default Config Vulnerable: ⚠️ Yes
Notes: Requires authenticated access to CycleCloud instance

📦 What is this software?

⚠️ Risk & Real-World Impact

🔴

Worst Case

An attacker gains full administrative control over the CycleCloud instance, allowing them to modify cluster configurations, access sensitive data, deploy malicious resources, or disrupt HPC operations.

🟠

Likely Case

Malicious insider or compromised account escalates privileges to perform unauthorized administrative actions within the CycleCloud environment.

🟢

If Mitigated

With proper access controls and monitoring, impact is limited to isolated administrative actions that can be detected and rolled back.

🌐 Internet-Facing: MEDIUM
🏢 Internal Only: HIGH

🎯 Exploit Status

Public PoC: ✅ No
Weaponized: UNKNOWN
Unauthenticated Exploit: ✅ No
Complexity: LOW

Requires authenticated user access; exploitation details not publicly disclosed

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: Latest version with Microsoft security update

Vendor Advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-29993

Restart Required: Yes

Instructions:

1. Update Azure CycleCloud to the latest version. 2. Restart CycleCloud services. 3. Verify the update was successful.

🔧 Temporary Workarounds

Restrict User Access

all

Limit user accounts to only necessary permissions and implement principle of least privilege

Enhanced Monitoring

all

Implement strict monitoring of administrative actions and privilege changes

🧯 If You Can't Patch

  • Implement strict access controls and review all user permissions
  • Enable detailed audit logging and monitor for privilege escalation attempts

🔍 How to Verify

Check if Vulnerable:

Check CycleCloud version against Microsoft security advisory

Check Version:

cyclecloud --version

Verify Fix Applied:

Verify CycleCloud is updated to version containing the security fix

📡 Detection & Monitoring

Log Indicators:

  • Unexpected privilege escalation events
  • Administrative actions from non-admin users
  • User role changes

Network Indicators:

  • Unusual API calls to administrative endpoints
  • Authentication patterns indicating privilege abuse

SIEM Query:

source="cyclecloud" AND (event_type="privilege_escalation" OR user_role_changed="true")

🔗 References

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