CVE-2018-11024 : Exploit Details and Defense Strategies
Learn about CVE-2018-11024 affecting Amazon Kindle Fire HD (3rd) Fire OS 4.5.5.3. Discover the impact, technical details, affected systems, exploitation method, and mitigation steps.
Amazon Kindle Fire HD (3rd) Fire OS 4.5.5.3 kernel component vulnerability allows for injection of crafted arguments leading to a kernel crash.
Understanding CVE-2018-11024
An issue in the kernel component of Amazon Kindle Fire HD (3rd) Fire OS 4.5.5.3 allows malicious actors to inject specially crafted arguments, potentially causing a kernel crash.
What is CVE-2018-11024?
The vulnerability exists in the file gcif.c within the gcioctl directory of the kernel's omap/drivers/misc/gcx module. By exploiting an ioctl on the /dev/gcioctl device with a specific command, attackers can inject malicious arguments.
The Impact of CVE-2018-11024
Successful exploitation of this vulnerability can result in a kernel crash, potentially leading to a denial of service (DoS) condition on the affected device.
Technical Details of CVE-2018-11024
The following technical details provide insight into the nature of the vulnerability.
Vulnerability Description
The flaw in kernel/omap/drivers/misc/gcx/gcioctl/gcif.c allows attackers to inject crafted arguments via an ioctl on the /dev/gcioctl device using a specific command, ultimately causing a kernel crash.
Affected Systems and Versions
- Product: Amazon Kindle Fire HD (3rd) Fire OS 4.5.5.3
- Vendor: Amazon
- Version: Not applicable
Exploitation Mechanism
- Attackers exploit an ioctl on the /dev/gcioctl device with the command 1077435789 to inject malicious arguments.
Mitigation and Prevention
Protecting systems from CVE-2018-11024 requires immediate action and long-term security practices.
Immediate Steps to Take
- Monitor vendor updates for patches addressing the vulnerability.
- Implement network segmentation to limit the impact of potential attacks.
- Consider restricting access to vulnerable devices.
Long-Term Security Practices
- Regularly update and patch all software and firmware on devices.
- Conduct security assessments and penetration testing to identify and address vulnerabilities.
Patching and Updates
- Apply patches provided by Amazon to mitigate the vulnerability and prevent exploitation.