CVE-2019-8922 : Vulnerability Insights and Analysis
Learn about CVE-2019-8922, a vulnerability in BlueZ up to version 5.48 that allows attackers to trigger a heap overflow. Find out how to mitigate and prevent exploitation.
A vulnerability related to the allocation of a heap-based buffer has been discovered in bluetoothd within BlueZ up to version 5.48. The lack of a verification mechanism in the current implementation can lead to a heap overflow if an attacker crafts a request that exceeds the buffer's capacity.
Understanding CVE-2019-8922
This CVE identifies a vulnerability in BlueZ that could be exploited to trigger a heap overflow.
What is CVE-2019-8922?
The vulnerability in bluetoothd within BlueZ up to version 5.48 allows attackers to cause a heap overflow by sending crafted requests that exceed the buffer's capacity.
The Impact of CVE-2019-8922
The vulnerability can be exploited by attackers to execute arbitrary code, potentially compromising the affected system's security and integrity.
Technical Details of CVE-2019-8922
The technical aspects of the vulnerability in BlueZ.
Vulnerability Description
- The vulnerability is related to the allocation of a heap-based buffer in bluetoothd within BlueZ up to version 5.48.
- The lack of a verification mechanism allows attackers to trigger a heap overflow by sending crafted requests.
Affected Systems and Versions
- Vendor: n/a
- Product: n/a
- Versions: All versions up to 5.48 are affected.
Exploitation Mechanism
- Attackers can exploit the vulnerability by crafting requests that exceed the buffer's capacity, leading to a heap overflow.
- Specifically resides in the service_attr_req called by process_request in sdpd-request.c.
Mitigation and Prevention
Steps to mitigate and prevent exploitation of CVE-2019-8922.
Immediate Steps to Take
- Update BlueZ to a patched version that addresses the vulnerability.
- Monitor network traffic for any signs of exploitation.
Long-Term Security Practices
- Implement secure coding practices to prevent buffer overflow vulnerabilities.
- Regularly update and patch software to address known security issues.
Patching and Updates
- Apply patches provided by BlueZ to fix the vulnerability and enhance system security.