CVE-2023-48053
📋 TL;DR
Archery v1.10.0 uses predictable initialization vectors (IVs) for AES-CBC encryption, allowing attackers to decrypt sensitive data without the encryption key. This affects all Archery v1.10.0 deployments using the vulnerable cryptographic implementation. The vulnerability exposes encrypted communications and stored data to unauthorized decryption.
💻 Affected Systems
- Archery
📦 What is this software?
Archery by Archerydms
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of all encrypted data including credentials, sensitive configurations, and communications, potentially leading to full system takeover.
Likely Case
Partial decryption of sensitive data such as database credentials, API keys, or user session information, enabling lateral movement or data theft.
If Mitigated
Limited data exposure if encryption is only used for non-critical data or if additional security layers prevent access to encrypted content.
🎯 Exploit Status
Exploitation requires access to encrypted data but doesn't require authentication to the system. The cryptographic weakness makes decryption straightforward once encrypted data is obtained.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: v1.10.1 or later
Vendor Advisory: https://github.com/hhyo/Archery/releases
Restart Required: Yes
Instructions:
1. Backup Archery configuration and data. 2. Download Archery v1.10.1 or later from official repository. 3. Replace existing installation with patched version. 4. Restart Archery services. 5. Re-encrypt any data encrypted with vulnerable version using new implementation.
🔧 Temporary Workarounds
Disable vulnerable encryption module
allTemporarily disable the specific cryptographic functions using predictable IVs until patching is complete.
# Identify and comment out vulnerable encryption calls in Archery source code
# Replace with secure alternatives or disable feature if possible
Network segmentation and access controls
allRestrict network access to Archery instances to minimize exposure of encrypted data.
# Configure firewall rules to limit Archery access to trusted IPs only
# Implement network segmentation to isolate Archery from sensitive systems
🧯 If You Can't Patch
- Implement application-layer encryption for sensitive data using a secure library with proper random IV generation.
- Monitor and log all access to encrypted data stores to detect unauthorized decryption attempts.
🔍 How to Verify
Check if Vulnerable:
Check Archery version via web interface or configuration files. Review source code for AES-CBC implementations using static or predictable IVs.Check Version:
Check Archery web interface dashboard or review version.txt in installation directory.Verify Fix Applied:
Verify Archery version is v1.10.1 or later. Test encryption functions to confirm random IV generation using tools like Wireshark or custom scripts.📡 Detection & Monitoring
Log Indicators:
- Multiple failed decryption attempts
- Unusual access patterns to encrypted data stores
- Errors in cryptographic operations
Network Indicators:
- Repeated transmission of similar encrypted payloads (indicating predictable IVs)
- Unencrypted transmission of sensitive data that should be encrypted
SIEM Query:
source="archery" AND (event_type="crypto_error" OR message="*decryption*" OR message="*encryption*") | stats count by src_ip