{ "CVE_data_meta": { "ASSIGNER": "sirt@juniper.net", "DATE_PUBLIC": "2021-01-13T17:00:00.000Z", "ID": "CVE-2021-0208", "STATE": "PUBLIC", "TITLE": "Junos OS and Junos OS Evolved: In bidirectional LSP configurations, on MPLS egress router RPD may core upon receipt of specific malformed RSVP packet." }, "affects": { "vendor": { "vendor_data": [ { "product": { "product_data": [ { "product_name": "Junos OS", "version": { "version_data": [ { "version_affected": "<", "version_value": "17.3R3-S10" }, { "version_affected": "<", "version_name": "17.4", "version_value": "17.4R3-S2" }, { "version_affected": "<", "version_name": "18.1", "version_value": "18.1R3-S10" }, { "version_affected": "<", "version_name": "18.2", "version_value": "18.2R2-S7, 18.2R3-S4" }, { "version_affected": "<", "version_name": "18.3", "version_value": "18.3R3-S2" }, { "version_affected": "<", "version_name": "18.4", "version_value": "18.4R1-S8, 18.4R2-S6, 18.4R3-S2" }, { "version_affected": "<", "version_name": "19.1", "version_value": "19.1R1-S5, 19.1R3-S3" }, { "version_affected": "<", "version_name": "19.2", "version_value": "19.2R3" }, { "version_affected": "<", "version_name": "19.3", "version_value": "19.3R2-S5, 19.3R3" }, { "version_affected": "<", "version_name": "19.4", "version_value": "19.4R2-S2, 19.4R3-S1" }, { "version_affected": "<", "version_name": "20.1", "version_value": "20.1R1-S4, 20.1R2" }, { "platform": "SRX Series", "version_affected": "<", "version_name": "15.1X49", "version_value": "15.1X49-D240" } ] } }, { "product_name": "Junos OS Evolved", "version": { "version_data": [ { "version_affected": "<", "version_name": "19.3", "version_value": "19.3R2-S5-EVO" }, { "version_affected": "<", "version_name": "19.4", "version_value": "19.4R2-S2-EVO" }, { "version_affected": "<", "version_name": "20.1", "version_value": "20.1R1-S4-EVO" } ] } } ] }, "vendor_name": "Juniper Networks" } ] } }, "configuration": [ { "lang": "eng", "value": "The following are examples of minimal configurations: \n [protocols mpls label-switched-path corouted-bidirectional;]\nor\n [logical-systems protocols mpls label-switched-path corouted-bidirectional;]\n \n" } ], "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": { "description_data": [ { "lang": "eng", "value": "An improper input validation vulnerability in the Routing Protocol Daemon (RPD) service of Juniper Networks Junos OS allows an attacker to send a malformed RSVP packet when bidirectional LSPs are in use, which when received by an egress router crashes the RPD causing a Denial of Service (DoS) condition. Continued receipt of the packet will sustain the Denial of Service. This issue affects: Juniper Networks Junos OS: All versions prior to 17.3R3-S10 except 15.1X49-D240 for SRX series; 17.4 versions prior to 17.4R3-S2; 18.1 versions prior to 18.1R3-S10; 18.2 versions prior to 18.2R2-S7, 18.2R3-S4; 18.3 versions prior to 18.3R3-S2; 18.4 versions prior to 18.4R1-S8, 18.4R2-S6, 18.4R3-S2; 19.1 versions prior to 19.1R1-S5, 19.1R3-S3; 19.2 versions prior to 19.2R3; 19.3 versions prior to 19.3R2-S5, 19.3R3; 19.4 versions prior to 19.4R2-S2, 19.4R3-S1; 20.1 versions prior to 20.1R1-S4, 20.1R2; 15.1X49 versions prior to 15.1X49-D240 on SRX Series. Juniper Networks Junos OS Evolved: 19.3 versions prior to 19.3R2-S5-EVO; 19.4 versions prior to 19.4R2-S2-EVO; 20.1 versions prior to 20.1R1-S4-EVO." } ] }, "exploit": [ { "lang": "eng", "value": "Juniper SIRT is not aware of any malicious exploitation of this vulnerability." } ], "generator": { "engine": "Vulnogram 0.0.9" }, "impact": { "cvss": { "attackComplexity": "LOW", "attackVector": "ADJACENT_NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1" } }, "problemtype": { "problemtype_data": [ { "description": [ { "lang": "eng", "value": "CWE-20: Improper Input Validation" } ] }, { "description": [ { "lang": "eng", "value": "Denial of Service (DoS)" } ] } ] }, "references": { "reference_data": [ { "name": "https://kb.juniper.net/JSA11098", "refsource": "CONFIRM", "url": "https://kb.juniper.net/JSA11098" }, { "refsource": "MISC", "url": "https://www.juniper.net/documentation/en_US/junos/topics/reference/configuration-statement/disable-edit-protocols-rsvp.html", "name": "https://www.juniper.net/documentation/en_US/junos/topics/reference/configuration-statement/disable-edit-protocols-rsvp.html" }, { "refsource": "MISC", "url": "https://www.juniper.net/documentation/en_US/junos/topics/reference/configuration-statement/corouted-bidirectional-edit-protocols-mpls.html", "name": "https://www.juniper.net/documentation/en_US/junos/topics/reference/configuration-statement/corouted-bidirectional-edit-protocols-mpls.html" } ] }, "solution": [ { "lang": "eng", "value": "The following software releases have been updated to resolve this specific issue: \nJunos OS: 15.1X49-D240, 17.3R3-S10, 17.4R3-S2, 18.1R3-S10, 18.2R2-S7, 18.2R3-S4, 18.3R3-S2, 18.4R1-S8, 18.4R2-S6, 18.4R3-S2, 19.1R1-S5, 19.1R3-S3, 19.2R3, 19.3R2-S5, 19.3R3, 19.4R2-S2, 19.4R3-S1, 20.1R1-S4, 20.1R2, 20.2R1, and all subsequent releases.\n\nNote: With the exception of SRX Series products using version 15.1X49-D240, all products using Junos OS prior to 17.3R3-S10 are affected and will not be fixed by Juniper Networks, Inc.\n\nJunos OS Evolved: 19.3R2-S5-EVO, 19.4R2-S2-EVO, 20.1R1-S4-EVO, and all subsequent releases. " } ], "source": { "advisory": "JSA11098", "defect": [ "1493718" ], "discovery": "USER" }, "work_around": [ { "lang": "eng", "value": "If bidirectional LSPs are running in the network, when changing family mpls maximum-labels on an interface, first disable RSVP for this interface.\nYou can include the disable statement at the following hierarchy levels:\n [edit protocols rsvp interface interface-name ]\n [edit logical-systems logical-system-name protocols rsvp interface interface-name ]\n\nSee the MPLS RSVP disable configuration guide for further details." } ] }