CVE-2020-5762 : Vulnerability Insights and Analysis
Learn about CVE-2020-5762 affecting Grandstream HT800 Series firmware. Discover the impact, technical details, and mitigation steps for this denial of service vulnerability.
Grandstream HT800 series firmware version 1.0.17.5 and below is vulnerable to a denial of service attack against the TR-069 service due to mishandling of the HTTP Authentication field.
Understanding CVE-2020-5762
This CVE involves a vulnerability in the Grandstream HT800 Series firmware that can be exploited by an unauthenticated remote attacker to cause a denial of service by stopping the TR-069 service.
What is CVE-2020-5762?
The CVE-2020-5762 vulnerability is a NULL pointer dereference issue in the TR-069 service of Grandstream HT800 series firmware versions 1.0.17.5 and below. This vulnerability allows an attacker to disrupt the service by exploiting the mishandling of the HTTP Authentication field.
The Impact of CVE-2020-5762
- An unauthenticated remote attacker can exploit this vulnerability to launch a denial of service attack against the TR-069 service.
- The attack can lead to service disruption and potential downtime for affected systems.
Technical Details of CVE-2020-5762
The technical details of this CVE provide insight into the vulnerability and its implications.
Vulnerability Description
The vulnerability in Grandstream HT800 series firmware version 1.0.17.5 and below stems from a NULL pointer dereference in the TR-069 service, triggered by mishandling of the HTTP Authentication field.
Affected Systems and Versions
- Product: Grandstream HT800 Series
- Vendor: n/a
- Versions Affected: Versions 1.0.17.5 and below
Exploitation Mechanism
The vulnerability can be exploited remotely by an unauthenticated attacker to disrupt the TR-069 service, causing a denial of service.
Mitigation and Prevention
Protecting systems from CVE-2020-5762 requires immediate action and long-term security measures.
Immediate Steps to Take
- Apply vendor-supplied patches or updates to mitigate the vulnerability.
- Implement network segmentation to limit exposure of the TR-069 service to untrusted networks.
- Monitor network traffic for any suspicious activity targeting the TR-069 service.
Long-Term Security Practices
- Regularly update firmware and software to address known vulnerabilities.
- Conduct security assessments and penetration testing to identify and remediate weaknesses in the network infrastructure.
Patching and Updates
- Stay informed about security advisories from the vendor and promptly apply patches to secure the system against potential exploits.