CVE-2021-45954 : Exploit Details and Defense Strategies
Discover details about CVE-2021-45954 impacting Dnsmasq 2.86 with a heap-based buffer overflow. Learn about the potential risks, affected systems, and mitigation steps.
Dnsmasq 2.86 has a heap-based buffer overflow in extract_name (called from answer_auth and FuzzAuth).
Understanding CVE-2021-45954
What is CVE-2021-45954?
Dnsmasq 2.86 is impacted by a heap-based buffer overflow vulnerability in extract_name function.
The Impact of CVE-2021-45954
The vendor disputes the existence of real vulnerabilities related to CVE-2021-45951 through CVE-2021-45957.
Technical Details of CVE-2021-45954
Vulnerability Description
The vulnerability involves a heap-based buffer overflow in extract_name in Dnsmasq 2.86.
Affected Systems and Versions
- Affected Systems: Not specified
- Affected Versions: Not specified
Exploitation Mechanism
The overflow occurs in the extract_name function called from answer_auth and FuzzAuth in Dnsmasq 2.86.
Mitigation and Prevention
Immediate Steps to Take
- Monitor vendor communications for updates
- Apply patches once available
Long-Term Security Practices
- Keep software and systems up to date
- Conduct regular security assessments
Patching and Updates
Stay informed about patches and updates released by the vendor for Dnsmasq 2.86.