{ "data_version": "4.0", "data_type": "CVE", "data_format": "MITRE", "CVE_data_meta": { "ID": "CVE-2024-39555", "ASSIGNER": "sirt@juniper.net", "STATE": "PUBLIC" }, "description": { "description_data": [ { "lang": "eng", "value": "An Improper Handling of Exceptional Conditions vulnerability in the Routing Protocol Daemon (RPD) of Juniper Networks Junos OS and Junos OS Evolved allows an attacker sending a specific malformed BGP update message to cause the session to reset, resulting in a Denial of Service (DoS). Continued receipt and processing of these malformed BGP update messages will create a sustained Denial of Service (DoS) condition.\n\nUpon receipt of a BGP update message over an established BGP session containing a specifically malformed tunnel encapsulation attribute, when segment routing is enabled, internal processing of the malformed attributes within the update results in improper parsing of remaining attributes, leading to session reset:\n\nBGP SEND Notification code 3 (Update Message Error) subcode 1 (invalid attribute list)\n\nOnly systems with segment routing enabled are vulnerable to this issue.\n\nThis issue affects eBGP and iBGP, in both IPv4 and IPv6 implementations, and requires a remote attacker to have at least one established BGP session.\n\nThis issue affects:\n\nJunos OS: \n\n\n * All versions before 21.4R3-S8, \n * from 22.2 before 22.2R3-S4, \n * from 22.3 before 22.3R3-S3, \n * from 22.4 before 22.4R3-S3, \n * from 23.2 before 23.2R2-S1, \n * from 23.4 before 23.4R1-S2, 23.4R2.\n\n\nJunos OS Evolved:\u00a0\n\n * All versions before 21.4R3-S8-EVO, \n * from 22.2-EVO before 22.2R3-S4-EVO, \n * from 22.3-EVO before 22.3R3-S3-EVO, \n * from 22.4-EVO before 22.4R3-S3-EVO, \n * from 23.2-EVO before 23.2R2-S1-EVO, \n * from 23.4-EVO before 23.4R1-S2-EVO, 23.4R2-EVO." } ] }, "problemtype": { "problemtype_data": [ { "description": [ { "lang": "eng", "value": "CWE-755 Improper Handling of Exceptional Conditions", "cweId": "CWE-755" } ] } ] }, "affects": { "vendor": { "vendor_data": [ { "vendor_name": "Juniper Networks", "product": { "product_data": [ { "product_name": "Junos OS", "version": { "version_data": [ { "version_affected": "<", "version_name": "0", "version_value": "21.4R3-S8" }, { "version_affected": "<", "version_name": "22.2", "version_value": "22.2R3-S4" }, { "version_affected": "<", "version_name": "22.3", "version_value": "22.3R3-S3" }, { "version_affected": "<", "version_name": "22.4", "version_value": "22.4R3-S3" }, { "version_affected": "<", "version_name": "23.2", "version_value": "23.2R2-S1" }, { "version_affected": "<", "version_name": "23.4", "version_value": "23.4R1-S2, 23.4R2" } ] } }, { "product_name": "Junos OS Evolved", "version": { "version_data": [ { "version_affected": "<", "version_name": "0", "version_value": "21.4R3-S8-EVO" }, { "version_affected": "<", "version_name": "22.2-EVO", "version_value": "22.2R3-S4-EVO" }, { "version_affected": "<", "version_name": "22.3-EVO", "version_value": "22.3R3-S3-EVO" }, { "version_affected": "<", "version_name": "22.4-EVO", "version_value": "22.4R3-S3-EVO" }, { "version_affected": "<", "version_name": "23.2-EVO", "version_value": "23.2R2-S1-EVO" }, { "version_affected": "<", "version_name": "23.4-EVO", "version_value": "23.4R1-S2-EVO, 23.4R2-EVO" } ] } } ] } } ] } }, "references": { "reference_data": [ { "url": "https://supportportal.juniper.net/JSA83015", "refsource": "MISC", "name": "https://supportportal.juniper.net/JSA83015" } ] }, "generator": { "engine": "Vulnogram 0.1.0-dev" }, "source": { "advisory": "JSA83015", "defect": [ "1787290" ], "discovery": "INTERNAL" }, "configuration": [ { "lang": "en", "supportingMedia": [ { "base64": false, "type": "text/html", "value": "A sample BGP segment routing configuration is shown below:

[ protocols bgp group <name> family inet segment-routing-te ] (IPv4)
\n\n[ protocols bgp group <name> family inet6 segment-routing-te ] (IPv6)
" } ], "value": "A sample BGP segment routing configuration is shown below:\n\n[ protocols bgp group family inet segment-routing-te ] (IPv4)\n\n\n[ protocols bgp group family inet6 segment-routing-te ] (IPv6)" } ], "work_around": [ { "lang": "en", "supportingMedia": [ { "base64": false, "type": "text/html", "value": "There are no known workarounds for this issue." } ], "value": "There are no known workarounds for this issue." } ], "exploit": [ { "lang": "en", "supportingMedia": [ { "base64": false, "type": "text/html", "value": "Juniper SIRT is not aware of any malicious exploitation of this vulnerability." } ], "value": "Juniper SIRT is not aware of any malicious exploitation of this vulnerability." } ], "solution": [ { "lang": "en", "supportingMedia": [ { "base64": false, "type": "text/html", "value": "The following software releases have been updated to resolve this specific issue:
\n
Junos OS: 21.4R3-S8, 22.2R3-S4, 22.3R3-S3, 22.4R3-S3, 23.2R2-S1, 23.4R1-S2, 23.4R2, 24.2R1, and all subsequent releases.
Junos OS Evolved: 21.4R3-S8-EVO, 22.2R3-S4-EVO, 22.3R3-S3-EVO, 22.4R3-S3-EVO, 23.2R2-S1-EVO, 23.4R1-S2-EVO, 23.4R2-EVO, 24.2R1-EVO, and all subsequent releases.
\n\n\n\n
" } ], "value": "The following software releases have been updated to resolve this specific issue:\n \n\nJunos OS: 21.4R3-S8, 22.2R3-S4, 22.3R3-S3, 22.4R3-S3, 23.2R2-S1, 23.4R1-S2, 23.4R2, 24.2R1, and all subsequent releases.\nJunos OS Evolved: 21.4R3-S8-EVO, 22.2R3-S4-EVO, 22.3R3-S3-EVO, 22.4R3-S3-EVO, 23.2R2-S1-EVO, 23.4R1-S2-EVO, 23.4R2-EVO, 24.2R1-EVO, and all subsequent releases." } ], "impact": { "cvss": [ { "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" } ] } }