CVE-2021-45957 - Vulnerability Details - OpenCVE

Dnsmasq 2.86 has a heap-based buffer overflow in answer_request (called from FuzzAnswerTheRequest and fuzz_rfc1035.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.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

Access Vector Network

Access Complexity Low

Authentication None

Confidentiality Impact Partial

Integrity Impact Partial

Availability Impact Partial

This CVE is not in the KEV list.

The EPSS score is 0.00046.

Key SSVC decision points have not yet been added.

Vendors	Products
Thekelleys	Dnsmasq

Configuration 1 [-]

cpe:2.3:a:thekelleys:dnsmasq:2.86:*:*:*:*:*:*:*

No data.

No data.

Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References

Link	Providers
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=35920
https://github.com/google/oss-fuzz-vulns/blob/main/vulns/dnsmasq/OSV-2021-935.yaml
https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2022q1/016162.html
https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2022q1/016164.html
https://nvd.nist.gov/vuln/detail/CVE-2021-45957
https://www.cve.org/CVERecord?id=CVE-2021-45957

History

No history.

MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2021-12-31T23:53:25

Updated: 2024-08-04T04:54:31.142Z

Reserved: 2021-12-31T00:00:00

Link: CVE-2021-45957

Vulnrichment

No data.

NVD

Status : Modified

Published: 2022-01-01T00:15:08.767

Modified: 2024-11-21T06:33:21.870

Link: CVE-2021-45957

Redhat

Severity :

Publid Date: 2022-01-01T00:00:00Z

Links: CVE-2021-45957 - Bugzilla

OpenCVE Enrichment

No data.

{"containers": {"cna": {"affected": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "descriptions": [{"lang": "en", "value": "Dnsmasq 2.86 has a heap-based buffer overflow in answer_request (called from FuzzAnswerTheRequest and fuzz_rfc1035.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."}], "problemTypes": [{"descriptions": [{"description": "n/a", "lang": "en", "type": "text"}]}], "providerMetadata": {"dateUpdated": "2022-02-19T21:24:24", "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "shortName": "mitre"}, "references": [{"tags": ["x_refsource_MISC"], "url": "https://github.com/google/oss-fuzz-vulns/blob/main/vulns/dnsmasq/OSV-2021-935.yaml"}, {"tags": ["x_refsource_MISC"], "url": "https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=35920"}, {"tags": ["x_refsource_MISC"], "url": "https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2022q1/016162.html"}, {"tags": ["x_refsource_MISC"], "url": "https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2022q1/016164.html"}], "tags": ["disputed"], "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "cve@mitre.org", "ID": "CVE-2021-45957", "STATE": "PUBLIC"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "n/a", "version": {"version_data": [{"version_value": "n/a"}]}}]}, "vendor_name": "n/a"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "** DISPUTED ** Dnsmasq 2.86 has a heap-based buffer overflow in answer_request (called from FuzzAnswerTheRequest and fuzz_rfc1035.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.\""}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "n/a"}]}]}, "references": {"reference_data": [{"name": "https://github.com/google/oss-fuzz-vulns/blob/main/vulns/dnsmasq/OSV-2021-935.yaml", "refsource": "MISC", "url": "https://github.com/google/oss-fuzz-vulns/blob/main/vulns/dnsmasq/OSV-2021-935.yaml"}, {"name": "https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=35920", "refsource": "MISC", "url": "https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=35920"}, {"name": "https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2022q1/016162.html", "refsource": "MISC", "url": "https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2022q1/016162.html"}, {"name": "https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2022q1/016164.html", "refsource": "MISC", "url": "https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2022q1/016164.html"}]}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T04:54:31.142Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://github.com/google/oss-fuzz-vulns/blob/main/vulns/dnsmasq/OSV-2021-935.yaml"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=35920"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2022q1/016162.html"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2022q1/016164.html"}]}]}, "cveMetadata": {"assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "assignerShortName": "mitre", "cveId": "CVE-2021-45957", "datePublished": "2021-12-31T23:53:25", "dateReserved": "2021-12-31T00:00:00", "dateUpdated": "2024-08-04T04:54:31.142Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:thekelleys:dnsmasq:2.86:*:*:*:*:*:*:*", "matchCriteriaId": "8F823B95-CBE5-4597-9DEE-8E9B833940A7", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [{"sourceIdentifier": "cve@mitre.org", "tags": ["disputed"]}], "descriptions": [{"lang": "en", "value": "Dnsmasq 2.86 has a heap-based buffer overflow in answer_request (called from FuzzAnswerTheRequest and fuzz_rfc1035.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."}, {"lang": "es", "value": "** EN DISPUTA ** Dnsmasq versi\u00f3n 2.86 presenta un desbordamiento de buffer en la regi\u00f3n heap de la memoria en la funci\u00f3n answer_request (llamado desde FuzzAnswerTheRequest y fuzz_rfc1035.c). NOTA: la posici\u00f3n del proveedor es que CVE-2021-45951 a CVE-2021-45957 \"no representan vulnerabilidades reales, seg\u00fan nuestro conocimiento\""}], "id": "CVE-2021-45957", "lastModified": "2024-11-21T06:33:21.870", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "HIGH", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 7.5, "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "version": "2.0"}, "exploitabilityScore": 10.0, "impactScore": 6.4, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.8, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2022-01-01T00:15:08.767", "references": [{"source": "cve@mitre.org", "tags": ["Exploit", "Issue Tracking", "Third Party Advisory"], "url": "https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=35920"}, {"source": "cve@mitre.org", "tags": ["Third Party Advisory"], "url": "https://github.com/google/oss-fuzz-vulns/blob/main/vulns/dnsmasq/OSV-2021-935.yaml"}, {"source": "cve@mitre.org", "tags": ["Mailing List", "Third Party Advisory"], "url": "https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2022q1/016162.html"}, {"source": "cve@mitre.org", "tags": ["Mailing List", "Third Party Advisory"], "url": "https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2022q1/016164.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Issue Tracking", "Third Party Advisory"], "url": "https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=35920"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://github.com/google/oss-fuzz-vulns/blob/main/vulns/dnsmasq/OSV-2021-935.yaml"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Third Party Advisory"], "url": "https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2022q1/016162.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Third Party Advisory"], "url": "https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2022q1/016164.html"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-787"}], "source": "nvd@nist.gov", "type": "Primary"}]}