CVE-2017-15945 : What You Need to Know
Learn about CVE-2017-15945, a vulnerability in Gentoo Linux affecting database packages. Discover the impact, affected systems, exploitation method, and mitigation steps.
CVE-2017-15945 is a vulnerability found in installation scripts of various database packages in Gentoo Linux, allowing local users to gain elevated privileges through the mysql account.
Understanding CVE-2017-15945
This CVE was published on October 27, 2017, and affects certain database packages in Gentoo Linux.
What is CVE-2017-15945?
The vulnerability arises from incorrect permissions set by installation scripts, enabling local users to exploit the mysql account for elevated privileges.
The Impact of CVE-2017-15945
The vulnerability could be exploited by local users to gain elevated privileges through the mysql account by creating a symbolic link.
Technical Details of CVE-2017-15945
This section provides more technical insights into the vulnerability.
Vulnerability Description
Before September 29, 2017, the installation scripts in Gentoo dev-db/mysql, dev-db/mariadb, dev-db/percona-server, dev-db/mysql-cluster, and dev-db/mariadb-galera packages had chown commands that allowed users to write to directory trees, leading to privilege escalation.
Affected Systems and Versions
- Affected packages: Gentoo dev-db/mysql, dev-db/mariadb, dev-db/percona-server, dev-db/mysql-cluster, dev-db/mariadb-galera
- Versions: Packages before September 29, 2017
Exploitation Mechanism
Local users could exploit the vulnerability by leveraging access to the mysql account to create a symbolic link, thereby gaining elevated privileges.
Mitigation and Prevention
To address CVE-2017-15945, consider the following mitigation strategies:
Immediate Steps to Take
- Update the affected packages to versions released after September 29, 2017
- Monitor and restrict local user permissions to prevent unauthorized access
Long-Term Security Practices
- Regularly review and update installation scripts to ensure correct permissions
- Conduct security audits to identify and address similar vulnerabilities
Patching and Updates
- Apply patches provided by the vendor to fix the vulnerability
- Stay informed about security advisories and updates from Gentoo Linux