Vulnerability · Published Dec 31, 2021 · Assigned by mitre
CVE-2021-45954
Critical 9.8
In plain English
A critical-severity security flaw in the affected software. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 2.7% (higher than 86% of all known vulnerabilities).
Severity (CVSS NVD)9.8Critical
Exploit odds (30 days)2.7%top 14.0% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
Dnsmasq 2.86 has a heap-based buffer overflow in extract_name (called from answer_auth and FuzzAuth). 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 products (as reported)
References
- https://github.com/google/oss-fuzz-vulns/blob/main/vulns/dnsmasq/OSV-2021-931.yaml x_refsource_MISC
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=35861 x_refsource_MISC
- https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2022q1/016162.html x_refsource_MISC
- https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2022q1/016164.html x_refsource_MISC