CVE-2018-20510 : What You Need to Know

In the Linux kernel version 4.14.90, a vulnerability exists in the function "print_binder_transaction_ilocked" in the file "drivers/android/binder.c". This flaw allows local users to access sensitive address information by viewing specific lines in a debugfs file.

Understanding CVE-2018-20510

This CVE entry highlights a security issue in the Linux kernel version 4.14.90 that can be exploited by local users to obtain sensitive address information.

What is CVE-2018-20510?

The vulnerability in the "print_binder_transaction_ilocked" function in the Linux kernel allows unauthorized access to sensitive address details through specific lines in a debugfs file.

The Impact of CVE-2018-20510

This vulnerability poses a security risk as it enables local users to retrieve sensitive address information, potentially leading to unauthorized access and exploitation of system resources.

Technical Details of CVE-2018-20510

This section provides detailed technical insights into the vulnerability.

Vulnerability Description

The flaw in the "print_binder_transaction_ilocked" function in the Linux kernel version 4.14.90 permits local users to extract sensitive address information by reading specific lines in a debugfs file.

Affected Systems and Versions

Affected System: Linux kernel version 4.14.90
Affected Component: "print_binder_transaction_ilocked" function in "drivers/android/binder.c"
Affected Users: Local users

Exploitation Mechanism

The vulnerability can be exploited by local users who have access to the system to read specific lines containing "*from *code *flags" in a debugfs file, thereby gaining unauthorized access to sensitive address information.

Mitigation and Prevention

Protecting systems from CVE-2018-20510 requires immediate actions and long-term security practices.

Immediate Steps to Take

Monitor system logs for any suspicious activities related to the vulnerability
Restrict access to debugfs files to authorized users only
Apply security patches or updates provided by the Linux kernel maintainers

Long-Term Security Practices

Regularly update the Linux kernel to the latest stable version
Implement least privilege access controls to limit user permissions
Conduct security training for users to raise awareness about potential risks

Patching and Updates

Stay informed about security advisories from the Linux kernel community
Apply patches promptly to address known vulnerabilities and enhance system security