CVE-2019-9514 : Exploit Details and Defense Strategies
Learn about CVE-2019-9514, a vulnerability in certain HTTP/2 implementations that can lead to a denial of service through a reset flood attack. Find out the impact, affected systems, exploitation mechanism, and mitigation steps.
Certain HTTP/2 implementations are vulnerable to a reset flood attack, potentially leading to a denial of service.
Understanding CVE-2019-9514
Certain HTTP/2 implementations have a weakness that can be exploited through a reset flood attack, causing a denial of service by overwhelming the target system.
What is CVE-2019-9514?
- Vulnerability in certain HTTP/2 implementations susceptible to a reset flood attack
- Attacker initiates multiple streams with invalid requests, causing the target to respond with RST_STREAM frames
- Attack can lead to excessive consumption of memory and CPU resources
The Impact of CVE-2019-9514
- Denial of service due to resource exhaustion
- Varies based on how the peer manages RST_STREAM frames
Technical Details of CVE-2019-9514
Certain HTTP/2 implementations are vulnerable to a reset flood attack, potentially leading to a denial of service.
Vulnerability Description
- Weakness in certain HTTP/2 implementations
- Reset flood attack overwhelms the target with RST_STREAM frames
Affected Systems and Versions
- Vendor: n/a
- Product: n/a
- Affected Versions: n/a
Exploitation Mechanism
- Attacker initiates multiple streams with invalid requests
- Expects peer to respond with RST_STREAM frames
- Consumes excessive memory and CPU resources
Mitigation and Prevention
Immediate Steps to Take:
- Implement network-level protections
- Monitor and filter incoming traffic
- Apply vendor patches and updates
Long-Term Security Practices:
- Regularly update and patch systems
- Conduct security assessments and audits
- Educate users on safe browsing practices
- Employ intrusion detection and prevention systems
- Follow secure coding practices
- Stay informed about emerging threats and vulnerabilities
- Engage in threat intelligence sharing
- Collaborate with security communities
- Consider implementing rate limiting and request validation
- Utilize WAFs and DDoS protection services
- Conduct regular security training and awareness programs
- Stay vigilant for unusual network activity
- Engage in incident response planning
Patching and Updates
- Apply patches provided by vendors to address the vulnerability