{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-04-18T07:48:42.223","vulnerabilities":[{"cve":{"id":"CVE-2021-31353","sourceIdentifier":"sirt@juniper.net","published":"2021-10-19T19:15:08.720","lastModified":"2024-11-21T06:05:29.003","vulnStatus":"Modified","cveTags":[],"descriptions":[{"lang":"en","value":"An Improper Handling of Exceptional Conditions vulnerability in Juniper Networks Junos OS and Junos OS Evolved allows an attacker to inject a specific BGP update, causing the routing protocol daemon (RPD) to crash and restart, leading to a Denial of Service (DoS). Continued receipt and processing of the BGP update will create a sustained Denial of Service (DoS) condition. This issue affects very specific versions of Juniper Networks Junos OS: 19.3R3-S2; 19.4R3-S3; 20.2 versions 20.2R2-S3 and later, prior to 20.2R3-S2; 20.3 versions 20.3R2 and later, prior to 20.3R3; 20.4 versions 20.4R2 and later, prior to 20.4R3; 21.1 versions prior to 21.1R2. Juniper Networks Junos OS 20.1 is not affected by this issue. This issue also affects Juniper Networks Junos OS Evolved: All versions prior to 20.4R2-S3-EVO, 20.4R3-EVO; 21.1-EVO versions prior to 21.1R2-EVO; 21.2-EVO versions prior to 21.2R2-EVO."},{"lang":"es","value":"Una vulnerabilidad de administración inapropiada de condiciones excepcionales en Juniper Networks Junos OS y Junos OS Evolved permite a un atacante inyectar una actualización BGP específica, causando el bloqueo y el reinicio del demonio del protocolo de enrutamiento (RPD), conllevando a una Denegación de Servicio (DoS). Si se sigue recibiendo y procesando la actualización BGP, será creada una condición de Denegación de Servicio (DoS) sostenida. Este problema afecta a versiones muy específicas de Juniper Networks Junos OS: 19.3R3-S2; 19.4R3-S3; 20.2 versiones 20.2R2-S3 y posteriores, anteriores a 20.2R3-S2; 20.3 versiones 20.3R2 y posteriores, anteriores a 20.3R3; 20.4 versiones 20.4R2 y posteriores, anteriores a 20.4R3; versiones 21.1 anteriores a 21.1R2. Juniper Networks Junos OS 20.1 no está afectado por este problema. Este problema también afecta a Juniper Networks Junos OS Evolved: Todas las versiones anteriores a 20.4R2-S3-EVO, 20.4R3-EVO; 21.1-EVO versiones anteriores a 21.1R2-EVO; 21.2-EVO versiones anteriores a 21.2R2-EVO"}],"metrics":{"cvssMetricV31":[{"source":"sirt@juniper.net","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","baseScore":7.5,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":3.9,"impactScore":3.6}],"cvssMetricV2":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"2.0","vectorString":"AV:N/AC:L/Au:N/C:N/I:N/A:P","baseScore":5.0,"accessVector":"NETWORK","accessComplexity":"LOW","authentication":"NONE","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"PARTIAL"},"baseSeverity":"MEDIUM","exploitabilityScore":10.0,"impactScore":2.9,"acInsufInfo":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":false}]},"weaknesses":[{"source":"sirt@juniper.net","type":"Secondary","description":[{"lang":"en","value":"CWE-755"}]},{"source":"nvd@nist.gov","type":"Primary","description":[{"lang":"en","value":"CWE-755"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:juniper:junos:19.3:r3-s2:*:*:*:*:*:*","matchCriteriaId":"D3FEA876-302D-4F07-94E6-237C669538F2"},{"vulnerable":true,"criteria":"cpe:2.3:o:juniper:junos:19.4:r3-s3:*:*:*:*:*:*","matchCriteriaId":"0886EFA6-47E3-4C1D-A278-D3891A487FED"},{"vulnerable":true,"criteria":"cpe:2.3:o:juniper:junos:20.2:r2-s3:*:*:*:*:*:*","matchCriteriaId":"3A58292B-814C-49E7-8D6D-BE26EFB9ADDF"},{"vulnerable":true,"criteria":"cpe:2.3:o:juniper:junos:20.2:r3:*:*:*:*:*:*","matchCriteriaId":"681AE183-7183-46E7-82EA-28C398FA1C3D"},{"vulnerable":true,"criteria":"cpe:2.3:o:juniper:junos:20.2:r3-s1:*:*:*:*:*:*","matchCriteriaId":"8A6E9627-8BF1-4BE8-844B-EE8F1C9478F0"},{"vulnerable":true,"criteria":"cpe:2.3:o:juniper:junos:20.3:r2:*:*:*:*:*:*","matchCriteriaId":"05D8427C-CDDE-4B2F-9CB8-41B9137660E4"},{"vulnerable":true,"criteria":"cpe:2.3:o:juniper:junos:20.3:r2-s1:*:*:*:*:*:*","matchCriteriaId":"F3DC01F2-6DFE-4A8E-9962-5E59AA965935"},{"vulnerable":true,"criteria":"cpe:2.3:o:juniper:junos:20.4:r2:*:*:*:*:*:*","matchCriteriaId":"C54B047C-4B38-40C0-9855-067DCF7E48BD"},{"vulnerable":true,"criteria":"cpe:2.3:o:juniper:junos:20.4:r2-s1:*:*:*:*:*:*","matchCriteriaId":"38984199-E332-4A9C-A4C0-78083D052E15"},{"vulnerable":true,"criteria":"cpe:2.3:o:juniper:junos:21.1:r1:*:*:*:*:*:*","matchCriteriaId":"625BA7E6-D2AD-4A48-9B94-24328BE5B06A"},{"vulnerable":true,"criteria":"cpe:2.3:o:juniper:junos:21.1:r1-s1:*:*:*:*:*:*","matchCriteriaId":"F462F4E3-762C-429F-8D25-5521100DD37C"},{"vulnerable":true,"criteria":"cpe:2.3:o:juniper:junos_os_evolved:*:*:*:*:*:*:*:*","versionEndIncluding":"20.3","matchCriteriaId":"4C8EA231-338B-46A2-BE77-3A7AB54BD148"},{"vulnerable":true,"criteria":"cpe:2.3:o:juniper:junos_os_evolved:20.4:r1:*:*:*:*:*:*","matchCriteriaId":"C9C8866D-162F-4C9B-8167-2FBA25410368"},{"vulnerable":true,"criteria":"cpe:2.3:o:juniper:junos_os_evolved:20.4:r1-s1:*:*:*:*:*:*","matchCriteriaId":"F85E5BC7-8607-4330-AA72-2273D32F8604"},{"vulnerable":true,"criteria":"cpe:2.3:o:juniper:junos_os_evolved:20.4:r1-s2:*:*:*:*:*:*","matchCriteriaId":"878C81C9-A418-4A21-8FDB-2116A992679C"},{"vulnerable":true,"criteria":"cpe:2.3:o:juniper:junos_os_evolved:20.4:r2:*:*:*:*:*:*","matchCriteriaId":"7451A671-A3CC-4904-8D45-947B1D3783C9"},{"vulnerable":true,"criteria":"cpe:2.3:o:juniper:junos_os_evolved:20.4:r2-s1:*:*:*:*:*:*","matchCriteriaId":"0108AD20-EAE6-41D1-AE48-254C46B5388A"},{"vulnerable":true,"criteria":"cpe:2.3:o:juniper:junos_os_evolved:20.4:r2-s2:*:*:*:*:*:*","matchCriteriaId":"44FBCA6F-EB05-4EE4-85FD-944BDAF7D81B"},{"vulnerable":true,"criteria":"cpe:2.3:o:juniper:junos_os_evolved:21.1:r1:*:*:*:*:*:*","matchCriteriaId":"AE674DD3-3590-4434-B144-5AD7EB5F039D"},{"vulnerable":true,"criteria":"cpe:2.3:o:juniper:junos_os_evolved:21.1:r1-s1:*:*:*:*:*:*","matchCriteriaId":"0099BDA9-9D4B-4D6C-8234-EFD9E8C63476"},{"vulnerable":true,"criteria":"cpe:2.3:o:juniper:junos_os_evolved:21.2:r1:*:*:*:*:*:*","matchCriteriaId":"3EA3DC63-B290-4D15-BEF9-21DEF36CA2EA"},{"vulnerable":true,"criteria":"cpe:2.3:o:juniper:junos_os_evolved:21.2:r1-s1:*:*:*:*:*:*","matchCriteriaId":"7E1E57AF-979B-4022-8AD6-B3558E06B718"}]}]}],"references":[{"url":"https://kb.juniper.net/JSA11218","source":"sirt@juniper.net","tags":["Exploit","Mitigation","Vendor Advisory"]},{"url":"https://kb.juniper.net/JSA11218","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Exploit","Mitigation","Vendor Advisory"]}]}}]}