| Vulnerability Name: | CVE-2021-45951 (CCN-216519) | ||||||||||||
| Assigned: | 2021-07-07 | ||||||||||||
| Published: | 2021-07-07 | ||||||||||||
| Updated: | 2022-03-18 | ||||||||||||
| Summary: | ** DISPUTED ** 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." | ||||||||||||
| CVSS v3 Severity: | 9.8 Critical (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H) 8.5 High (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C)
7.1 High (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C)
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| CVSS v2 Severity: | 7.5 High (CVSS v2 Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P)
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| Vulnerability Type: | CWE-787 | ||||||||||||
| Vulnerability Consequences: | Gain Access | ||||||||||||
| References: | Source: MITRE Type: CNA CVE-2021-45951 Source: CCN Type: dnsmasq Web site dnsmasq Source: CCN Type: Google Security Research Issue 35868 dnsmasq:fuzz_rfc1035: Heap-buffer-overflow in check_bad_address Source: MISC Type: Exploit, Issue Tracking, Third Party Advisory https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=35868 Source: XF Type: UNKNOWN dnsmasq-cve202145951-bo(216519) Source: MISC Type: Third Party Advisory https://github.com/google/oss-fuzz-vulns/blob/main/vulns/dnsmasq/OSV-2021-924.yaml Source: MISC Type: Mailing List, Third Party Advisory https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2022q1/016162.html Source: MISC Type: Mailing List, Third Party Advisory https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2022q1/016164.html Source: CCN Type: WhiteSource Vulnerability Database CVE-2021-45951 | ||||||||||||
| Vulnerable Configuration: | Configuration 1: Configuration CCN 1:  Denotes that component is vulnerable | ||||||||||||
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