CVE-2018-11019 : Exploit Details and Defense Strategies
Learn about CVE-2018-11019 affecting Amazon Kindle Fire HD(3rd) Fire OS 4.5.5.3 kernel component gcif.c. Discover impact, technical details, affected systems, exploitation, and mitigation steps.
Amazon Kindle Fire HD(3rd) Fire OS 4.5.5.3 kernel component gcif.c is vulnerable to an attack allowing an attacker to crash the kernel through an ioctl operation.
Understanding CVE-2018-11019
The vulnerability in the Amazon Kindle Fire HD(3rd) Fire OS 4.5.5.3 kernel component gcif.c can be exploited to crash the kernel.
What is CVE-2018-11019?
The component gcif.c in the kernel of Amazon Kindle Fire HD(3rd) Fire OS 4.5.5.3 is vulnerable to an attack where an attacker can inject a manipulated argument through an ioctl operation on the /dev/gcioctl device with the command 3221773726, resulting in a crash of the kernel.
The Impact of CVE-2018-11019
This vulnerability allows attackers to crash the kernel of Amazon Kindle Fire HD(3rd) Fire OS 4.5.5.3, potentially leading to denial of service or other security compromises.
Technical Details of CVE-2018-11019
The technical details of the CVE-2018-11019 vulnerability.
Vulnerability Description
The vulnerability in kernel/omap/drivers/misc/gcx/gcioctl/gcif.c in the Amazon Kindle Fire HD(3rd) Fire OS 4.5.5.3 kernel component allows attackers to inject a crafted argument via an ioctl operation on device /dev/gcioctl with the command 3221773726, leading to 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 can exploit this vulnerability by injecting a manipulated argument through an ioctl operation on the /dev/gcioctl device with the specific command, causing a crash in the kernel.
Mitigation and Prevention
Steps to mitigate and prevent the CVE-2018-11019 vulnerability.
Immediate Steps to Take
- Monitor for any unusual kernel crashes or system instability.
- Apply security patches or updates provided by the vendor.
Long-Term Security Practices
- Regularly update the device's operating system and kernel components.
- Implement proper access controls and restrictions to prevent unauthorized access to critical system components.
Patching and Updates
- Apply the latest security patches and updates released by Amazon for the affected device and kernel components.