CVE-2021-45953: Buffer Overflow
First published: Fri Dec 31 2021(Updated: )
** DISPUTED ** Dnsmasq 2.86 has a heap-based buffer overflow in extract_name (called from hash_questions and fuzz_util.c). 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."
Credit: cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Thekelleys Dnsmasq | =2.86 |
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Reference Links
Frequently Asked Questions
What is CVE-2021-45953?
CVE-2021-45953 is a heap-based buffer overflow vulnerability in Dnsmasq 2.86.
What is the severity of CVE-2021-45953?
CVE-2021-45953 has a severity rating of critical (9.8).
How does CVE-2021-45953 affect Dnsmasq?
CVE-2021-45953 affects Dnsmasq 2.86.
Is CVE-2021-45953 considered a real vulnerability?
The vendor disputes whether CVE-2021-45953 represents a real vulnerability.
Are there any references for CVE-2021-45953?
References for CVE-2021-45953 can be found at: [reference 1](https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=35858), [reference 2](https://github.com/google/oss-fuzz-vulns/blob/main/vulns/dnsmasq/OSV-2021-929.yaml), [reference 3](https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2022q1/016162.html).
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