CVE-2017-16913 : Security Advisory and Response
Learn about CVE-2017-16913, a vulnerability in the Linux Kernel versions before 4.14.8, 4.9.71, and 4.4.114 that could lead to a denial of service attack through a crafted USB over IP packet. Find mitigation steps and prevention measures here.
A vulnerability in the Linux Kernel versions prior to 4.14.8, 4.9.71, and 4.4.114 could allow attackers to trigger a denial of service condition through a crafted USB over IP packet.
Understanding CVE-2017-16913
This CVE identifies a specific vulnerability in the Linux Kernel that could lead to a denial of service attack.
What is CVE-2017-16913?
The vulnerability exists in the "stub_recv_cmd_submit()" function of the Linux Kernel versions before 4.14.8, 4.9.71, and 4.4.114. Attackers can exploit this flaw to cause a denial of service by triggering arbitrary memory allocation using a specially crafted USB over IP packet.
The Impact of CVE-2017-16913
The vulnerability could result in a denial of service condition, potentially disrupting the normal operation of affected systems.
Technical Details of CVE-2017-16913
This section provides more technical insights into the CVE.
Vulnerability Description
The vulnerability is located in the "stub_recv_cmd_submit()" function in drivers/usb/usbip/stub_rx.c of the Linux Kernel versions prior to 4.14.8, 4.9.71, and 4.4.114. It allows attackers to cause a denial of service through arbitrary memory allocation.
Affected Systems and Versions
- Product: Linux Kernel
- Vendor: Flexera Software LLC
- Affected Versions: Before version 4.14.8, 4.9.71, and 4.4.114
Exploitation Mechanism
Attackers can exploit this vulnerability by sending a specifically crafted USB over IP packet to trigger the denial of service condition.
Mitigation and Prevention
Protecting systems from CVE-2017-16913 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Apply patches provided by the vendor to mitigate the vulnerability.
- Monitor security advisories for updates and apply them promptly.
Long-Term Security Practices
- Regularly update and patch all software and systems to prevent known vulnerabilities.
- Implement network segmentation and access controls to limit the impact of potential attacks.
Patching and Updates
Ensure that the Linux Kernel is updated to versions 4.14.8, 4.9.71, or 4.4.114 or later to address the vulnerability.