CVE-2021-45951: Buffer Overflow
DISPUTED Dnsmasq 2.86 has a heap-based buffer overflow in checkbadaddress (called from checkforboguswildcard and FuzzCheckForBogusWildcard). NOTE: the vendor's position is that CVE-2021-45951 through CVE-2021-45957 "do not represent real vulnerabilities, to the best of our knowledge."
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2021-45951?
The severity of CVE-2021-45951 is critical with a CVSS score of 9.8.
What is the affected software for CVE-2021-45951?
The affected software for CVE-2021-45951 is Dnsmasq version 2.86.
What is the CWE ID for CVE-2021-45951?
The CWE ID for CVE-2021-45951 is CWE-119 and CWE-787.
How can I fix the heap-based buffer overflow vulnerability in Dnsmasq version 2.86?
To fix the heap-based buffer overflow vulnerability in Dnsmasq version 2.86, update to a version that includes the necessary patches and security updates.
Where can I find more information about CVE-2021-45951?
More information about CVE-2021-45951 can be found in the provided references: [Link 1](https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=35868), [Link 2](https://github.com/google/oss-fuzz-vulns/blob/main/vulns/dnsmasq/OSV-2021-924.yaml), [Link 3](https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2022q1/016162.html).