CVE-2017-12313 : Security Advisory and Response
Learn about CVE-2017-12313 affecting Cisco Network Academy Packet Tracer software. Find out how an attacker could exploit DLL Preload to execute arbitrary code and the necessary mitigation steps.
Cisco Network Academy Packet Tracer software has a vulnerability known as DLL Preload, allowing an authenticated local attacker to execute arbitrary code through DLL hijacking.
Understanding CVE-2017-12313
What is CVE-2017-12313?
The vulnerability in Cisco Network Academy Packet Tracer software enables an attacker to run arbitrary code by exploiting DLL Preload.
The Impact of CVE-2017-12313
The vulnerability could lead to the execution of commands on the underlying Windows host with privileges equivalent to the SYSTEM account.
Technical Details of CVE-2017-12313
Vulnerability Description
- The flaw arises from incomplete validation of path and file names of DLL files before loading them.
Affected Systems and Versions
- Cisco Network Academy Packet Tracer software
Exploitation Mechanism
- Attacker places a crafted DLL file in the current working directory where the installer is executed by a local user with administrative privileges.
Mitigation and Prevention
Immediate Steps to Take
- Avoid executing the installer from untrusted directories.
- Regularly update the software to the latest version.
Long-Term Security Practices
- Implement the principle of least privilege to restrict user permissions.
- Conduct regular security training to educate users on safe software practices.
Patching and Updates
- Apply patches provided by Cisco to address the vulnerability.