CVE-2017-11549 : Exploit Details and Defense Strategies
Learn about CVE-2017-11549, a vulnerability in TiMidity++ 2.14.0 play_midi function allowing remote attackers to cause denial of service by consuming CPU resources. Find mitigation steps here.
TiMidity++ 2.14.0 play_midi Function Denial of Service Vulnerability
Understanding CVE-2017-11549
This CVE involves a vulnerability in the play_midi function of the playmidi.c file in TiMidity++ 2.14.0, allowing remote attackers to disrupt services by causing CPU resource consumption through a specially crafted mid file.
What is CVE-2017-11549?
The play_midi function in TiMidity++ 2.14.0 can be exploited by attackers to create a large loop, leading to significant CPU consumption, especially when the --background option is used.
The Impact of CVE-2017-11549
This vulnerability can result in a denial of service (DoS) condition, affecting the availability and performance of the service.
Technical Details of CVE-2017-11549
Vulnerability Description
The play_midi function in playmidi.c in TiMidity++ 2.14.0 allows remote attackers to cause a denial of service by triggering a large loop and excessive CPU consumption using a crafted mid file.
Affected Systems and Versions
- Affected Version: TiMidity++ 2.14.0
- Other versions may also be impacted.
Exploitation Mechanism
Attackers can exploit this vulnerability remotely by sending a specially crafted mid file to the target system, causing the play_midi function to enter a large loop and consume CPU resources.
Mitigation and Prevention
Immediate Steps to Take
- Disable the affected function or service if not essential for operations.
- Implement network-level controls to restrict access to vulnerable services.
- Regularly monitor CPU usage for abnormal spikes that may indicate exploitation.
Long-Term Security Practices
- Keep software and systems updated to patch known vulnerabilities.
- Conduct regular security assessments and penetration testing to identify and address weaknesses.
- Educate users and administrators about safe handling of files and network resources.
Patching and Updates
- Check for patches or updates from the vendor to address this vulnerability.
- Apply security updates promptly to mitigate the risk of exploitation.