CVE-2018-1130 : What You Need to Know
Learn about CVE-2018-1130, a vulnerability in the Linux kernel before version 4.16-rc7 that allows a local user to trigger a null pointer dereference, leading to a denial of service. Find mitigation steps and patching information here.
Linux kernel before version 4.16-rc7 is vulnerable to a null pointer dereference in the dccp_write_xmit() function, allowing a local user to cause a denial of service.
Understanding CVE-2018-1130
This CVE involves a security vulnerability in the Linux kernel that can be exploited by a local user to trigger a null pointer dereference, leading to a denial of service.
What is CVE-2018-1130?
The vulnerability in the Linux kernel, specifically before version 4.16-rc7, resides in the dccp_write_xmit() function within the net/dccp/output.c file. It can be exploited by a local user through carefully crafted system calls.
The Impact of CVE-2018-1130
- CVSS Base Score: 5.5 (Medium)
- Attack Vector: Local
- Attack Complexity: Low
- Privileges Required: Low
- Availability Impact: High
- The vulnerability can result in a denial of service by triggering a null pointer dereference.
Technical Details of CVE-2018-1130
This section covers specific technical details of the CVE.
Vulnerability Description
The vulnerability allows a local user to exploit the dccp_write_xmit() function in the Linux kernel, potentially leading to a denial of service.
Affected Systems and Versions
- Affected Product: Kernel
- Vendor: Unspecified
- Affected Version: kernel 4.16-rc7
Exploitation Mechanism
The vulnerability can be exploited by a local user through a series of carefully crafted system calls.
Mitigation and Prevention
Protecting systems from CVE-2018-1130 involves immediate steps and long-term security practices.
Immediate Steps to Take
- Apply patches provided by the vendor promptly.
- Monitor vendor advisories for updates and follow best security practices.
Long-Term Security Practices
- Regularly update and patch the Linux kernel to mitigate known vulnerabilities.
- Implement least privilege access controls to limit the impact of potential exploits.
- Conduct regular security assessments and audits to identify and address vulnerabilities.
Patching and Updates
- Refer to vendor-specific security advisories for patch availability and installation instructions.