CVE-2025-65295
Summary
CVE-2025-65295 describes multiple critical vulnerabilities in the firmware update process of specific Aqara Hub devices. These flaws allow a remote attacker to potentially install malicious firmware on the affected devices due to insufficient signature validation and the use of outdated cryptographic methods, leading to full device compromise.
Technical Details
CVE-2025-65295 encompasses a set of vulnerabilities related to the firmware update mechanism in Aqara Hub devices. The primary issue is the lack of robust firmware signature verification during the update process. Specifically, the devices do not adequately validate the cryptographic signatures of firmware images before installation. This allows an attacker to forge a seemingly valid firmware image and install it on the device.
Further compounding the issue is the use of outdated cryptographic algorithms. These older algorithms are susceptible to various known attacks, making it easier for an attacker to generate valid-looking signatures for malicious firmware. The combination of weak signature validation and outdated cryptography significantly lowers the barrier to exploitation.
Additionally, the vulnerability report mentions information exposure through improperly initialized memory. While the exact nature of this exposure isn't fully detailed, it suggests that sensitive data, potentially including cryptographic keys or other security-relevant information, might be leaked during the firmware update process. This leaked information could further aid an attacker in crafting malicious firmware or gaining unauthorized access to the device.
The exploitation process typically involves intercepting the firmware update process, replacing the legitimate firmware image with a malicious one, and then tricking the device into installing the compromised firmware. Successful exploitation grants the attacker complete control over the affected Aqara Hub, potentially allowing them to eavesdrop on network traffic, control connected devices, or use the hub as a foothold for further attacks on the local network.
Affected Products and Versions
The following Aqara Hub products and firmware versions are known to be affected by CVE-2025-65295:
- Aqara Camera Hub G3 Firmware 4.1.9_0027
- Aqara Hub M2 Firmware 4.3.6_0027
- Aqara Hub M3 Firmware 4.3.6_0025
It is possible that other Aqara Hub models and firmware versions are also affected. Users are advised to check with Aqara for the latest security information.
Impact Assessment
Successful exploitation of CVE-2025-65295 can have significant security implications. An attacker who successfully installs malicious firmware on an Aqara Hub gains complete control over the device. This can lead to:
- Full Device Compromise: The attacker can execute arbitrary code on the hub, effectively turning it into a remotely controlled device.
- Data Breach Risk: The attacker can access and exfiltrate sensitive data stored on the hub or transmitted through it, including user credentials, network configurations, and data from connected devices.
- Control of Connected Devices: The attacker can control all devices connected to the compromised hub, such as smart lights, door locks, and security cameras. This can lead to unauthorized access to homes or businesses, privacy violations, and even physical harm.
- Network Pivot Point: The compromised hub can be used as a pivot point to attack other devices on the local network.
- Denial of Service: The attacker can render the hub unusable, disrupting smart home functionality.
Remediation
The primary remediation for CVE-2025-65295 is to update the affected Aqara Hub devices to a patched firmware version that addresses the vulnerabilities. Aqara has likely released firmware updates to mitigate these issues. Users should follow these steps:
Immediate Actions
- Check for Firmware Updates: Immediately check for available firmware updates for your Aqara Hub devices using the Aqara Home app or the device's web interface.
- Apply Firmware Updates: If a firmware update is available, apply it as soon as possible. Ensure the update process is completed without interruption.
- Monitor Network Traffic: Monitor network traffic from and to your Aqara Hub devices for any suspicious activity.
Long-term Solutions
- Enable Automatic Updates: If available, enable automatic firmware updates to ensure that your devices are always running the latest security patches.
- Strong Passwords: Use strong, unique passwords for your Aqara account and any connected services.
- Network Segmentation: Consider segmenting your network to isolate IoT devices from critical systems.
Detection & Scanning
Detecting exploitation of CVE-2025-65295 can be challenging. Network intrusion detection systems (IDS) may be able to identify suspicious network traffic patterns associated with firmware updates or command-and-control communication from compromised devices. However, a more reliable approach is to proactively scan your network for vulnerable Aqara Hub devices.
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