CVE-2021-36754 - Vulnerability Details - OpenCVE

Description

PowerDNS Authoritative Server 4.5.0 before 4.5.1 allows anybody to crash the process by sending a specific query (QTYPE 65535) that causes an out-of-bounds exception.

Published: 2021-07-27

Score: 7.5 High

EPSS: 64.9% High

KEV: No

Impact:

Action:

Analysis

No analysis available yet.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

n/a

n/a

affected

Version	Status	Constraints
`n/a`	affected	—

Configuration 1 [-]

cpe:2.3:a:powerdns:authoritative_server:*:*:*:*:*:*:*:*

No data.

No data available yet.

Remediation

No remediation available yet.

Tracking

Sign in to view the affected projects.

Advisories

No advisories yet.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

Access Vector Network

Access Complexity Low

Authentication None

Confidentiality Impact None

Integrity Impact None

Availability Impact Partial

This CVE is not in the KEV list.

The EPSS score is 0.64857.

Key SSVC decision points have not yet been added.

References

Link	Providers
http://www.openwall.com/lists/oss-security/2021/07/26/2
https://doc.powerdns.com/authoritative/security-advisories/index.html
https://doc.powerdns.com/authoritative/security-advisories/powerdns-advisory-2021-01.html

History

No history.

Subscriptions

Powerdns Authoritative Server

MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2021-07-27T05:35:37.000Z

Updated: 2024-08-04T01:01:58.866Z

Reserved: 2021-07-15T00:00:00.000Z

Link: CVE-2021-36754

Vulnrichment

No data.

NVD

Status : Modified

Published: 2021-07-30T14:15:18.253

Modified: 2026-06-17T03:59:06.827

Link: CVE-2021-36754

Redhat

No data.

OpenCVE Enrichment

No data.

Weaknesses

CWE-119
Improper Restriction of Operations within the Bounds of a Memory Buffer

{"containers": {"cna": {"affected": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "descriptions": [{"lang": "en", "value": "PowerDNS Authoritative Server 4.5.0 before 4.5.1 allows anybody to crash the process by sending a specific query (QTYPE 65535) that causes an out-of-bounds exception."}], "problemTypes": [{"descriptions": [{"description": "n/a", "lang": "en", "type": "text"}]}], "providerMetadata": {"dateUpdated": "2021-07-27T19:27:52.000Z", "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "shortName": "mitre"}, "references": [{"tags": ["x_refsource_MISC"], "url": "https://doc.powerdns.com/authoritative/security-advisories/index.html"}, {"name": "[oss-security] 20210726 security advisory 2021-01 for PowerDNS Authoritative Server 4.5.0", "tags": ["mailing-list", "x_refsource_MLIST"], "url": "http://www.openwall.com/lists/oss-security/2021/07/26/2"}, {"tags": ["x_refsource_CONFIRM"], "url": "https://doc.powerdns.com/authoritative/security-advisories/powerdns-advisory-2021-01.html"}], "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "cve@mitre.org", "ID": "CVE-2021-36754", "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": "PowerDNS Authoritative Server 4.5.0 before 4.5.1 allows anybody to crash the process by sending a specific query (QTYPE 65535) that causes an out-of-bounds exception."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "n/a"}]}]}, "references": {"reference_data": [{"name": "https://doc.powerdns.com/authoritative/security-advisories/index.html", "refsource": "MISC", "url": "https://doc.powerdns.com/authoritative/security-advisories/index.html"}, {"name": "[oss-security] 20210726 security advisory 2021-01 for PowerDNS Authoritative Server 4.5.0", "refsource": "MLIST", "url": "http://www.openwall.com/lists/oss-security/2021/07/26/2"}, {"name": "https://doc.powerdns.com/authoritative/security-advisories/powerdns-advisory-2021-01.html", "refsource": "CONFIRM", "url": "https://doc.powerdns.com/authoritative/security-advisories/powerdns-advisory-2021-01.html"}]}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T01:01:58.866Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://doc.powerdns.com/authoritative/security-advisories/index.html"}, {"name": "[oss-security] 20210726 security advisory 2021-01 for PowerDNS Authoritative Server 4.5.0", "tags": ["mailing-list", "x_refsource_MLIST", "x_transferred"], "url": "http://www.openwall.com/lists/oss-security/2021/07/26/2"}, {"tags": ["x_refsource_CONFIRM", "x_transferred"], "url": "https://doc.powerdns.com/authoritative/security-advisories/powerdns-advisory-2021-01.html"}]}]}, "cveMetadata": {"assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "assignerShortName": "mitre", "cveId": "CVE-2021-36754", "datePublished": "2021-07-27T05:35:37.000Z", "dateReserved": "2021-07-15T00:00:00.000Z", "dateUpdated": "2024-08-04T01:01:58.866Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

{"affected": [{"affectedData": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "source": "cve@mitre.org"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:powerdns:authoritative_server:*:*:*:*:*:*:*:*", "matchCriteriaId": "D3963AAF-2D8D-4205-AAA1-4D6DF5F13396", "versionEndExcluding": "4.5.1", "versionStartIncluding": "4.5.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "PowerDNS Authoritative Server 4.5.0 before 4.5.1 allows anybody to crash the process by sending a specific query (QTYPE 65535) that causes an out-of-bounds exception."}, {"lang": "es", "value": "PowerDNS Authoritative Server versiones 4.5.0 anteriores a 4.5.1, permite a cualquiera bloquear el proceso mediante el env\u00edo de una consulta espec\u00edfica (QTYPE 65535) que causa una excepci\u00f3n fuera de l\u00edmites"}], "id": "CVE-2021-36754", "lastModified": "2026-06-17T03:59:06.827", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 5.0, "confidentialityImpact": "NONE", "integrityImpact": "NONE", "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "version": "2.0"}, "exploitabilityScore": 10.0, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2021-07-30T14:15:18.253", "references": [{"source": "cve@mitre.org", "tags": ["Mailing List", "Third Party Advisory"], "url": "http://www.openwall.com/lists/oss-security/2021/07/26/2"}, {"source": "cve@mitre.org", "tags": ["Vendor Advisory"], "url": "https://doc.powerdns.com/authoritative/security-advisories/index.html"}, {"source": "cve@mitre.org", "tags": ["Vendor Advisory"], "url": "https://doc.powerdns.com/authoritative/security-advisories/powerdns-advisory-2021-01.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Third Party Advisory"], "url": "http://www.openwall.com/lists/oss-security/2021/07/26/2"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://doc.powerdns.com/authoritative/security-advisories/index.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://doc.powerdns.com/authoritative/security-advisories/powerdns-advisory-2021-01.html"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-119"}], "source": "nvd@nist.gov", "type": "Primary"}]}