CVE-2021-22945
Estado: ModificadaCrítica (9.1)—
When sending data to an MQTT server, libcurl <= 7.73.0 and 7.78.0 could in some circumstances erroneously keep a pointer to an already freed memory area and both use that again in a subsequent call to send data and also free it *again*.
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
- Puntuación base: 9.1
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 6.68%
- Percentil entre todas las CVEs puntuadas: 94
- Fecha de la puntuación: 6/10/2026
EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).
Tecnologías afectadas (17)
Apple — MacosDebian — Debian LinuxFedoraproject — FedoraHaxx — LibcurlNetapp — Cloud BackupNetapp — Clustered Data OntapNetapp — H300e FirmwareNetapp — H300s FirmwareNetapp — H410s FirmwareNetapp — H500e FirmwareNetapp — H500s FirmwareNetapp — H700e FirmwareNetapp — H700s FirmwareNetapp — Solidfire Baseboard Management Controller FirmwareOracle — Mysql ServerSiemens — Sinec INSSplunk — Universal Forwarder
CWE
- CWE-415
- CWE-415
- CWE-415
Referencias
- http://seclists.org/fulldisclosure/2022/Mar/29
- https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf
- https://hackerone.com/reports/1269242
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/APOAK4X73EJTAPTSVT7IRVDMUWVXNWGD/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RWLEC6YVEM2HWUBX67SDGPSY4CQB72OE/
- https://security.gentoo.org/glsa/202212-01
- https://security.netapp.com/advisory/ntap-20211029-0003/
- https://support.apple.com/kb/HT213183
- https://www.debian.org/security/2022/dsa-5197
- https://www.oracle.com/security-alerts/cpuoct2021.html
- http://seclists.org/fulldisclosure/2022/Mar/29
- https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf
- https://hackerone.com/reports/1269242
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/APOAK4X73EJTAPTSVT7IRVDMUWVXNWGD/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RWLEC6YVEM2HWUBX67SDGPSY4CQB72OE/
- https://security.gentoo.org/glsa/202212-01
- https://security.netapp.com/advisory/ntap-20211029-0003/
- https://support.apple.com/kb/HT213183
- https://www.debian.org/security/2022/dsa-5197
- https://www.oracle.com/security-alerts/cpuoct2021.html
JSON original (NVD)
Mostrar
{
"id": "CVE-2021-22945",
"cveTags": [],
"metrics": {
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2021-22945",
"role": "CISA Coordinator",
"options": [
{
"exploitation": "none"
},
{
"automatable": "yes"
},
{
"technicalImpact": "partial"
}
],
"version": "2.0.3",
"timestamp": "2024-03-28T15:53:40.610696Z"
}
}
],
"cvssMetricV2": [
{
"type": "Primary",
"source": "nvd@nist.gov",
"cvssData": {
"version": "2.0",
"baseScore": 5.8,
"accessVector": "NETWORK",
"vectorString": "AV:N/AC:M/Au:N/C:P/I:N/A:P",
"authentication": "NONE",
"integrityImpact": "NONE",
"accessComplexity": "MEDIUM",
"availabilityImpact": "PARTIAL",
"confidentialityImpact": "PARTIAL"
},
"acInsufInfo": false,
"impactScore": 4.9,
"baseSeverity": "MEDIUM",
"obtainAllPrivilege": false,
"exploitabilityScore": 8.6,
"obtainUserPrivilege": false,
"obtainOtherPrivilege": false,
"userInteractionRequired": false
}
],
"cvssMetricV31": [
{
"type": "Primary",
"source": "nvd@nist.gov",
"cvssData": {
"scope": "UNCHANGED",
"version": "3.1",
"baseScore": 9.1,
"attackVector": "NETWORK",
"baseSeverity": "CRITICAL",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H",
"integrityImpact": "NONE",
"userInteraction": "NONE",
"attackComplexity": "LOW",
"availabilityImpact": "HIGH",
"privilegesRequired": "NONE",
"confidentialityImpact": "HIGH"
},
"impactScore": 5.2,
"exploitabilityScore": 3.9
},
{
"type": "Secondary",
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"cvssData": {
"scope": "UNCHANGED",
"version": "3.1",
"baseScore": 9.1,
"attackVector": "NETWORK",
"baseSeverity": "CRITICAL",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H",
"integrityImpact": "NONE",
"userInteraction": "NONE",
"attackComplexity": "LOW",
"availabilityImpact": "HIGH",
"privilegesRequired": "NONE",
"confidentialityImpact": "HIGH"
},
"impactScore": 5.2,
"exploitabilityScore": 3.9
}
]
},
"affected": [
{
"source": "support@hackerone.com",
"affectedData": [
{
"vendor": "n/a",
"product": "https://github.com/curl/curl",
"versions": [
{
"status": "affected",
"version": "curl 7.73.0 to and including 7.78.0"
}
]
}
]
}
],
"published": "2021-09-23T13:15:08.690",
"references": [
{
"url": "http://seclists.org/fulldisclosure/2022/Mar/29",
"tags": [
"Mailing List",
"Third Party Advisory"
],
"source": "support@hackerone.com"
},
{
"url": "https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf",
"tags": [
"Patch",
"Third Party Advisory"
],
"source": "support@hackerone.com"
},
{
"url": "https://hackerone.com/reports/1269242",
"tags": [
"Exploit",
"Patch",
"Third Party Advisory"
],
"source": "support@hackerone.com"
},
{
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/APOAK4X73EJTAPTSVT7IRVDMUWVXNWGD/",
"tags": [
"Mailing List",
"Third Party Advisory"
],
"source": "support@hackerone.com"
},
{
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RWLEC6YVEM2HWUBX67SDGPSY4CQB72OE/",
"tags": [
"Mailing List",
"Third Party Advisory"
],
"source": "support@hackerone.com"
},
{
"url": "https://security.gentoo.org/glsa/202212-01",
"tags": [
"Third Party Advisory"
],
"source": "support@hackerone.com"
},
{
"url": "https://security.netapp.com/advisory/ntap-20211029-0003/",
"tags": [
"Third Party Advisory"
],
"source": "support@hackerone.com"
},
{
"url": "https://support.apple.com/kb/HT213183",
"tags": [
"Third Party Advisory"
],
"source": "support@hackerone.com"
},
{
"url": "https://www.debian.org/security/2022/dsa-5197",
"tags": [
"Third Party Advisory"
],
"source": "support@hackerone.com"
},
{
"url": "https://www.oracle.com/security-alerts/cpuoct2021.html",
"tags": [
"Patch",
"Third Party Advisory"
],
"source": "support@hackerone.com"
},
{
"url": "http://seclists.org/fulldisclosure/2022/Mar/29",
"tags": [
"Mailing List",
"Third Party Advisory"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf",
"tags": [
"Patch",
"Third Party Advisory"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "https://hackerone.com/reports/1269242",
"tags": [
"Exploit",
"Patch",
"Third Party Advisory"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/APOAK4X73EJTAPTSVT7IRVDMUWVXNWGD/",
"tags": [
"Mailing List",
"Third Party Advisory"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RWLEC6YVEM2HWUBX67SDGPSY4CQB72OE/",
"tags": [
"Mailing List",
"Third Party Advisory"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "https://security.gentoo.org/glsa/202212-01",
"tags": [
"Third Party Advisory"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "https://security.netapp.com/advisory/ntap-20211029-0003/",
"tags": [
"Third Party Advisory"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "https://support.apple.com/kb/HT213183",
"tags": [
"Third Party Advisory"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "https://www.debian.org/security/2022/dsa-5197",
"tags": [
"Third Party Advisory"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "https://www.oracle.com/security-alerts/cpuoct2021.html",
"tags": [
"Patch",
"Third Party Advisory"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
}
],
"vulnStatus": "Modified",
"weaknesses": [
{
"type": "Secondary",
"source": "support@hackerone.com",
"description": [
{
"lang": "en",
"value": "CWE-415"
}
]
},
{
"type": "Primary",
"source": "nvd@nist.gov",
"description": [
{
"lang": "en",
"value": "CWE-415"
}
]
},
{
"type": "Secondary",
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"description": [
{
"lang": "en",
"value": "CWE-415"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "When sending data to an MQTT server, libcurl <= 7.73.0 and 7.78.0 could in some circumstances erroneously keep a pointer to an already freed memory area and both use that again in a subsequent call to send data and also free it *again*."
},
{
"lang": "es",
"value": "Cuando se envían datos a un servidor MQTT, libcurl versiones anteriores a 7.73.0, incluyéndola y 7.78.0, podría en algunas circunstancias, mantener erróneamente un puntero a un área de memoria ya liberada y usarlo de nuevo en una llamada posterior para enviar datos y también liberarlo *de nuevo*"
}
],
"lastModified": "2026-06-17T03:38:04.823",
"configurations": [
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:a:haxx:libcurl:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "9F299899-24BA-432D-818D-32546C576E9B",
"versionEndIncluding": "7.78.0",
"versionStartIncluding": "7.73.0"
}
],
"operator": "OR"
}
]
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "E460AA51-FCDA-46B9-AE97-E6676AA5E194"
},
{
"criteria": "cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "80E516C0-98A4-4ADE-B69F-66A772E2BAAA"
}
],
"operator": "OR"
}
]
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:a:netapp:cloud_backup:-:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "5C2089EE-5D7F-47EC-8EA5-0F69790564C4"
},
{
"criteria": "cpe:2.3:a:netapp:clustered_data_ontap:-:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "1FE996B1-6951-4F85-AA58-B99A379D2163"
}
],
"operator": "OR"
}
]
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:a:oracle:mysql_server:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "E667933A-37EA-4BC2-9180-C3B4B7038866",
"versionEndIncluding": "5.7.35",
"versionStartIncluding": "5.7.0"
},
{
"criteria": "cpe:2.3:a:oracle:mysql_server:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "709E83B4-8C66-4255-870B-2F72B37BA8C6",
"versionEndIncluding": "8.0.26",
"versionStartIncluding": "8.0.0"
}
],
"operator": "OR"
}
]
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:netapp:h300s_firmware:-:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "6770B6C3-732E-4E22-BF1C-2D2FD610061C"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:netapp:h300s:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "9F9C8C20-42EB-4AB5-BD97-212DEB070C43"
}
],
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:netapp:h500s_firmware:-:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "7FFF7106-ED78-49BA-9EC5-B889E3685D53"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:netapp:h500s:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "E63D8B0F-006E-4801-BF9D-1C001BBFB4F9"
}
],
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:netapp:h700s_firmware:-:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "56409CEC-5A1E-4450-AA42-641E459CC2AF"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:netapp:h700s:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "B06F4839-D16A-4A61-9BB5-55B13F41E47F"
}
],
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:netapp:h300e_firmware:-:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "108A2215-50FB-4074-94CF-C130FA14566D"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:netapp:h300e:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "7AFC73CE-ABB9-42D3-9A71-3F5BC5381E0E"
}
],
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:netapp:h500e_firmware:-:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "32F0B6C0-F930-480D-962B-3F4EFDCC13C7"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:netapp:h500e:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "803BC414-B250-4E3A-A478-A3881340D6B8"
}
],
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:netapp:h700e_firmware:-:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "0FEB3337-BFDE-462A-908B-176F92053CEC"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:netapp:h700e:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "736AEAE9-782B-4F71-9893-DED53367E102"
}
],
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:netapp:h410s_firmware:-:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "D0B4AD8A-F172-4558-AEC6-FF424BA2D912"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:netapp:h410s:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "8497A4C9-8474-4A62-8331-3FE862ED4098"
}
],
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:netapp:solidfire_baseboard_management_controller_firmware:-:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "FB9B8171-F6CA-427D-81E0-6536D3BBFA8D"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:netapp:solidfire_baseboard_management_controller:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "090AA6F4-4404-4E26-82AB-C3A22636F276"
}
],
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "9422A022-F279-4596-BC97-3223611D73DC",
"versionEndExcluding": "12.3",
"versionStartIncluding": "12.0.0"
}
],
"operator": "OR"
}
]
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:a:siemens:sinec_ins:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "65B7AF44-C3DB-4C29-8690-827CD4518653",
"versionEndExcluding": "1.0.1.1"
}
],
"operator": "OR"
}
]
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "FA6FEEC2-9F11-4643-8827-749718254FED"
}
],
"operator": "OR"
}
]
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:a:splunk:universal_forwarder:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "5722E753-75DE-4944-A11B-556CB299B57D",
"versionEndExcluding": "8.2.12",
"versionStartIncluding": "8.2.0"
},
{
"criteria": "cpe:2.3:a:splunk:universal_forwarder:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "DC0F9351-81A4-4FEA-B6B5-6E960A933D32",
"versionEndExcluding": "9.0.6",
"versionStartIncluding": "9.0.0"
},
{
"criteria": "cpe:2.3:a:splunk:universal_forwarder:9.1.0:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "EED24E67-2957-4C1B-8FEA-E2D2FE7B97FC"
}
],
"operator": "OR"
}
]
}
],
"sourceIdentifier": "support@hackerone.com"
}