CVE-2021-45951

Dnsmasq 2.86 has a heap-based buffer overflow in check_bad_address (called from check_for_bogus_wildcard 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.

Score

CVSS 3.1 9.8 Critical

Status

Modified - cve@mitre.org

Published

2022-01-01

Last modified

2024-08-04

Weaknesses

CWE-787

Affected products

• Dnsmasq (Thekelleys)

References

• https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=35868
• https://github.com/google/oss-fuzz-vulns/blob/main/vulns/dnsmasq/OSV-2021-924.yaml
• https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2022q1/016162.html
• https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2022q1/016164.html