CVE-2020-6073 : Security Advisory and Response
Learn about CVE-2020-6073, a high-severity denial-of-service vulnerability in Videolabs libmicrodns 0.1.0. Find out the impact, affected systems, exploitation details, and mitigation steps.
An exploitable denial-of-service vulnerability exists in the TXT record-parsing functionality of Videolabs libmicrodns 0.1.0. Multiple integer overflows in the RDATA section of TXT records in mDNS messages can lead to a denial of service when triggered by an attacker.
Understanding CVE-2020-6073
This CVE involves a denial-of-service vulnerability in Videolabs libmicrodns 0.1.0.
What is CVE-2020-6073?
The vulnerability in Videolabs libmicrodns 0.1.0 allows attackers to exploit integer overflows in TXT record parsing, causing denial of service by sending malicious mDNS messages.
The Impact of CVE-2020-6073
The vulnerability has a CVSS base score of 7.5 (High) with a high impact on availability. It requires low attack complexity and no privileges, making it a significant threat.
Technical Details of CVE-2020-6073
This section provides detailed technical information about the vulnerability.
Vulnerability Description
The vulnerability arises from integer overflows in the RDATA section of TXT records in mDNS messages, allowing attackers to trigger denial of service.
Affected Systems and Versions
- Product: Videolabs
- Version: Videolabs libmicrodns 0.1.0
Exploitation Mechanism
Attackers can exploit the vulnerability by sending malicious mDNS messages containing crafted TXT records to trigger the integer overflows.
Mitigation and Prevention
Protecting systems from CVE-2020-6073 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Apply vendor patches or updates promptly to mitigate the vulnerability.
- Implement network-level protections to filter out potentially malicious mDNS messages.
Long-Term Security Practices
- Regularly update and patch software to address known vulnerabilities.
- Conduct security assessments and audits to identify and remediate potential weaknesses.
Patching and Updates
- Stay informed about security advisories from vendors and security researchers.
- Monitor for any signs of exploitation and apply patches as soon as they are available.