CVE-2020-1626

{"containers": {"cna": {"affected": [{"product": "Junos OS Evolved", "vendor": "Juniper Networks", "versions": [{"lessThan": "19.1R1-EVO", "status": "affected", "version": "unspecified", "versionType": "custom"}]}], "datePublic": "2020-04-08T00:00:00.000Z", "descriptions": [{"lang": "en", "value": "A vulnerability in Juniper Networks Junos OS Evolved may allow an attacker to cause a Denial of Service (DoS) by sending a high rate of specific packets to the device, resulting in a pfemand process crash. The pfemand process is responsible for packet forwarding on the device. By continuously sending the packet flood, an attacker can repeatedly crash the pfemand process causing a sustained Denial of Service. This issue can only be triggered by traffic sent to the device. Transit traffic does not cause this issue. This issue affects all version of Junos OS Evolved prior to 19.1R1-EVO."}], "exploits": [{"lang": "en", "value": "Juniper SIRT is not aware of any malicious exploitation of this vulnerability."}], "metrics": [{"cvssV3_1": {"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"}}], "problemTypes": [{"descriptions": [{"description": "Denial of Service", "lang": "en", "type": "text"}]}], "providerMetadata": {"dateUpdated": "2020-04-09T23:09:15.000Z", "orgId": "8cbe9d5a-a066-4c94-8978-4b15efeae968", "shortName": "juniper"}, "references": [{"tags": ["x_refsource_MISC"], "url": "https://tools.ietf.org/html/rfc6192"}, {"tags": ["x_refsource_CONFIRM"], "url": "https://kb.juniper.net/JSA11005"}], "solutions": [{"lang": "en", "value": "The following software releases have been updated to resolve this specific issue: 19.1R1-EVO, 19.2R1-EVO, 19.3R1-EVO, and all subsequent releases."}], "source": {"advisory": "JSA11005", "defect": ["1419130"], "discovery": "INTERNAL"}, "title": "Junos OS Evolved: Denial of Service vulnerability in processing high rate of specific packets", "workarounds": [{"lang": "en", "value": "Use access lists or firewall filters to limit access to the device to known TCP and UDP ports, and only from trusted, administrative networks or hosts."}], "x_generator": {"engine": "Vulnogram 0.0.9"}, "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "sirt@juniper.net", "DATE_PUBLIC": "2020-04-08T16:00:00.000Z", "ID": "CVE-2020-1626", "STATE": "PUBLIC", "TITLE": "Junos OS Evolved: Denial of Service vulnerability in processing high rate of specific packets"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "Junos OS Evolved", "version": {"version_data": [{"version_affected": "<", "version_value": "19.1R1-EVO"}]}}]}, "vendor_name": "Juniper Networks"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "A vulnerability in Juniper Networks Junos OS Evolved may allow an attacker to cause a Denial of Service (DoS) by sending a high rate of specific packets to the device, resulting in a pfemand process crash. The pfemand process is responsible for packet forwarding on the device. By continuously sending the packet flood, an attacker can repeatedly crash the pfemand process causing a sustained Denial of Service. This issue can only be triggered by traffic sent to the device. Transit traffic does not cause this issue. 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{"affected": [{"affectedData": [{"product": "Junos OS Evolved", "vendor": "Juniper Networks", "versions": [{"lessThan": "19.1R1-EVO", "status": "affected", "version": "unspecified", "versionType": "custom"}]}], "source": "sirt@juniper.net"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:juniper:junos_os_evolved:18.3:r1:*:*:*:*:*:*", "matchCriteriaId": "7E72627C-4793-4F22-B769-A3FFB77E7DE1", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "A vulnerability in Juniper Networks Junos OS Evolved may allow an attacker to cause a Denial of Service (DoS) by sending a high rate of specific packets to the device, resulting in a pfemand process crash. The pfemand process is responsible for packet forwarding on the device. By continuously sending the packet flood, an attacker can repeatedly crash the pfemand process causing a sustained Denial of Service. This issue can only be triggered by traffic sent to the device. Transit traffic does not cause this issue. This issue affects all version of Junos OS Evolved prior to 19.1R1-EVO."}, {"lang": "es", "value": "Una vulnerabilidad en Juniper Networks Junos OS Evolved, puede permitir a un atacante causar una Denegaci\u00f3n de servicio (DoS) mediante el env\u00edo de una alta tasa de paquetes espec\u00edficos hacia el dispositivo, resultando en un bloqueo del proceso pfemand. El proceso pfemand es responsable del reenv\u00edo de paquetes en el dispositivo. Al enviar continuamente una inundaci\u00f3n de paquetes, un atacante puede bloquear repetidas veces el proceso pfemand causando una Denegaci\u00f3n de Servicio sostenida. Este problema solo puede ser desencadenado mediante el tr\u00e1fico enviado hacia el dispositivo. El tr\u00e1fico de tr\u00e1nsito no causa este problema. Este problema afecta a todas las versiones de Junos OS Evolved anteriores a 19.1R1-EVO."}], "id": "CVE-2020-1626", "lastModified": "2026-06-17T03:02:01.213", "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": "sirt@juniper.net", "type": "Secondary"}, {"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": "2020-04-08T20:15:13.980", "references": [{"source": "sirt@juniper.net", "tags": ["Vendor Advisory"], "url": "https://kb.juniper.net/JSA11005"}, {"source": "sirt@juniper.net", "tags": ["Third Party Advisory"], "url": "https://tools.ietf.org/html/rfc6192"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://kb.juniper.net/JSA11005"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://tools.ietf.org/html/rfc6192"}], "sourceIdentifier": "sirt@juniper.net", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "NVD-CWE-noinfo"}], "source": "nvd@nist.gov", "type": "Primary"}]}

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