CVE-2018-20378 : Security Advisory and Response
Learn about CVE-2018-20378 affecting OpenSynergy Blue SDK versions 3.2 through 6.0. Unauthorized code execution or denial of service attacks can occur. Find mitigation steps here.
OpenSynergy Blue SDK versions 3.2 through 6.0 are vulnerable to unauthorized code execution or denial of service attacks through the L2CAP signaling channel and SDP server.
Understanding CVE-2018-20378
This CVE involves a vulnerability in the L2CAP signaling channel and SDP server in OpenSynergy Blue SDK versions 3.2 through 6.0.
What is CVE-2018-20378?
The vulnerability allows unauthorized attackers to execute arbitrary code or cause a denial of service by sending malicious L2CAP configuration requests and crafting SDP communication over specifically configured L2CAP channels. Attackers need Bluetooth physical layer connectivity and the ability to send raw L2CAP frames.
The Impact of CVE-2018-20378
The vulnerability in OpenSynergy Blue SDK versions 3.2 through 6.0 can lead to unauthorized code execution or denial of service attacks, posing a significant risk to affected systems.
Technical Details of CVE-2018-20378
This section provides more technical insights into the vulnerability.
Vulnerability Description
The issue is related to the functions L2Cap_HandleConfigReq in core/stack/l2cap/l2cap_sm.c and SdpServHandleServiceSearchAttribReq in core/stack/sdp/sdpserv.c.
Affected Systems and Versions
- Product: n/a
- Vendor: n/a
- Versions: 3.2 through 6.0
Exploitation Mechanism
- Attackers exploit the vulnerability by sending malicious L2CAP configuration requests and crafting SDP communication over specifically configured L2CAP channels.
Mitigation and Prevention
Protecting systems from CVE-2018-20378 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Apply security patches provided by the vendor promptly.
- Monitor Bluetooth connectivity for suspicious activities.
- Implement network segmentation to limit the impact of potential attacks.
Long-Term Security Practices
- Regularly update and patch all software components.
- Conduct security assessments and penetration testing to identify vulnerabilities.
Patching and Updates
- Stay informed about security advisories and updates from OpenSynergy to address the CVE-2018-20378 vulnerability.