CVE-2017-2671 Explained : Impact and Mitigation
Discover the impact of CVE-2017-2671, a Linux kernel vulnerability allowing local users to trigger denial of service attacks. Learn about affected versions and mitigation steps.
CVE-2017-2671 was published on April 5, 2017, and affects the Linux kernel up to version 4.10.8. This vulnerability in the ping_unhash function can be exploited by local users to cause a denial of service by utilizing their access to the protocol value of IPPROTO_ICMP in a socket system call.
Understanding CVE-2017-2671
This section provides insights into the nature and impact of CVE-2017-2671.
What is CVE-2017-2671?
The ping_unhash function in the Linux kernel up to version 4.10.8 experiences a delay in acquiring a specific lock, leading to a safety issue in disconnect function calls. This vulnerability allows local users to trigger a denial of service (panic) by leveraging their access to the protocol value of IPPROTO_ICMP in a socket system call.
The Impact of CVE-2017-2671
The vulnerability poses a risk of denial of service attacks by local users, potentially causing system panics and disrupting normal operations.
Technical Details of CVE-2017-2671
Explore the technical aspects of CVE-2017-2671 to understand its implications.
Vulnerability Description
The ping_unhash function delay in acquiring a specific lock in the Linux kernel up to version 4.10.8 can be exploited by local users to trigger a denial of service by manipulating the protocol value of IPPROTO_ICMP in a socket system call.
Affected Systems and Versions
- Product: Not applicable
- Vendor: Not applicable
- Versions affected: Up to Linux kernel version 4.10.8
Exploitation Mechanism
The vulnerability can be exploited by local users with access to the protocol value of IPPROTO_ICMP in a socket system call, leading to a denial of service (panic) scenario.
Mitigation and Prevention
Learn how to mitigate the risks associated with CVE-2017-2671.
Immediate Steps to Take
- Apply relevant patches provided by the Linux kernel maintainers.
- Monitor security advisories for updates and apply them promptly.
Long-Term Security Practices
- Implement the principle of least privilege to restrict user access.
- Regularly review and update security configurations to enhance system resilience.
Patching and Updates
Regularly check for security updates and patches from the Linux kernel maintainers to address CVE-2017-2671.