CVE-2023-1691
📋 TL;DR
This vulnerability involves improper exception handling in Huawei's communication framework, allowing attackers to trigger abnormal behavior in affected features. It affects Huawei devices running HarmonyOS and certain Android-based EMUI systems. Successful exploitation could disrupt functionality or potentially lead to denial of service.
💻 Affected Systems
- Huawei smartphones
- Huawei tablets
- Huawei wearables
📦 What is this software?
Emui by Huawei
Emui by Huawei
Emui by Huawei
Emui by Huawei
Harmonyos by Huawei
Harmonyos by Huawei
Harmonyos by Huawei
Harmonyos by Huawei
⚠️ Risk & Real-World Impact
Worst Case
Complete disruption of communication features leading to denial of service, potentially affecting device stability and core functionality.
Likely Case
Partial feature degradation or temporary service interruption in communication-related functions.
If Mitigated
Minimal impact with proper exception handling and monitoring in place.
🎯 Exploit Status
Exploitation requires triggering specific conditions in the communication framework. No public exploits have been reported as of the advisory date.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Security patches released in July 2023
Vendor Advisory: https://consumer.huawei.com/en/support/bulletin/2023/7/
Restart Required: Yes
Instructions:
1. Check for system updates in device settings. 2. Install the latest security patch from July 2023 or later. 3. Restart the device after installation.
🔧 Temporary Workarounds
Disable unnecessary communication features
allTemporarily disable non-essential communication services to reduce attack surface
🧯 If You Can't Patch
- Isolate affected devices from critical networks
- Implement network monitoring for abnormal communication patterns
🔍 How to Verify
Check if Vulnerable:
Check device security patch level in Settings > About phone > Build numberCheck Version:
Settings > About phone > Build number (no CLI command available)Verify Fix Applied:
Verify security patch date is July 2023 or later in device settings📡 Detection & Monitoring
Log Indicators:
- Unexpected communication framework crashes
- Exception stack traces in system logs
Network Indicators:
- Abnormal communication patterns from affected devices
SIEM Query:
device_logs WHERE message CONTAINS 'communication framework exception' OR message CONTAINS 'CVE-2023-1691'🔗 References
- https://consumer.huawei.com/en/support/bulletin/2023/7/
- https://device.harmonyos.com/en/docs/security/update/security-bulletins-202307-0000001587168858
- https://consumer.huawei.com/en/support/bulletin/2023/7/
- https://device.harmonyos.com/en/docs/security/update/security-bulletins-202307-0000001587168858
