{"id":"CVE-2024-47491","aliases":["EUVD-2024-42496","GHSA-79v4-xhfm-cr97"],"status":"published","title":"Junos OS and Junos OS Evolved: Receipt of a specific malformed BGP path attribute leads to an RPD crash","description":"An Improper Handling of Exceptional Conditions vulnerability in the Routing Protocol Daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows a network-based, unauthenticated attacker to cause Denial of Service (DoS).\n\nWhen a BGP UPDATE with malformed path attribute is received over an established BGP session, rpd crashes and restarts. \n\nContinuous receipt of a BGP UPDATE with a specifically malformed path attribute will create a sustained Denial of Service (DoS) condition for impacted devices. While this issue affects systems running 32-bit and 64-bit systems, the probability of impact on 64-bit system is extremely low. \nAccording to  KB25803  https://supportportal.juniper.net/s/article/Junos-How-to-check-if-Junos-OS-is-64-or-32-bit-on-a-router , customers can confirm 32-bit or 64-bit system via the ' show version detail ' command:\n\n\n\n     lab@router\u003e show version detail| match 32\n     JUNOS 32-bit kernel Software Suite \n\n     lab@router\u003e show version detail| match 64\n     JUNOS 64-bit kernel Software Suite \n\n\nThis issue affects:\n\n Juniper Networks Junos OS: \n\n  *  All versions before 21.4R3-S8, \n  *  from 22.2 before 22.2R3-S4, \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\n Juniper Networks Junos OS Evolved:   *  All versions before 21.4R3-S8-EVO, \n  *  from 22.2 before 22.2R3-S4-EVO, \n  *  from 22.4 before 22.4R3-S3-EVO,\n  *  from 23.2 before 23.2R2-S1-EVO, \n  *  from 23.4 before 23.4R1-S2-EVO, 23.4R2-EVO.","severity":{"version":"4.0","score":8.2,"vector":"CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00597,"percentile":0.48975,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-755"],"published":"2024-10-11T15:23:08Z","modified":"2026-06-17T07:57:10Z","products":[{"vendor":"juniper","product":"junos"},{"vendor":"juniper","product":"junos_evolved"},{"vendor":"juniper","product":"junos_os_evolved"},{"vendor":"juniper networks","product":"junos os"},{"vendor":"juniper networks","product":"junos os evolved"}],"references":[{"url":"https://supportportal.juniper.net/","tags":["vendor-advisory","Permissions Required"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2024-47491"},{"url":"https://supportportal.juniper.net"},{"url":"https://github.com/advisories/GHSA-79v4-xhfm-cr97"}],"sources":{"cve":[{"id":"CVE-2024-47491","title":"Junos OS and Junos OS Evolved: Receipt of a specific malformed BGP path attribute leads to an RPD crash","description":"An Improper Handling of Exceptional Conditions vulnerability in the Routing Protocol Daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows a network-based, unauthenticated attacker to cause Denial of Service (DoS).\n\nWhen a BGP UPDATE with malformed path attribute is received over an established BGP session, rpd crashes and restarts. \n\nContinuous receipt of a BGP UPDATE with a specifically malformed path attribute will create a sustained Denial of Service (DoS) condition for impacted devices. While this issue affects systems running 32-bit and 64-bit systems, the probability of impact on 64-bit system is extremely low. \nAccording to  KB25803  https://supportportal.juniper.net/s/article/Junos-How-to-check-if-Junos-OS-is-64-or-32-bit-on-a-router , customers can confirm 32-bit or 64-bit system via the ' show version detail ' command:\n\n\n\n     lab@router\u003e show version detail| match 32\n     JUNOS 32-bit kernel Software Suite \n\n     lab@router\u003e show version detail| match 64\n     JUNOS 64-bit kernel Software Suite \n\n\nThis issue affects:\n\n Juniper Networks Junos OS: \n\n  *  All versions before 21.4R3-S8, \n  *  from 22.2 before 22.2R3-S4, \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\n Juniper Networks Junos OS Evolved:   *  All versions before 21.4R3-S8-EVO, \n  *  from 22.2 before 22.2R3-S4-EVO, \n  *  from 22.4 before 22.4R3-S3-EVO,\n  *  from 23.2 before 23.2R2-S1-EVO, \n  *  from 23.4 before 23.4R1-S2-EVO, 23.4R2-EVO.","status":"published","published":"2024-10-11T15:23:08.762Z","modified":"2024-10-22T19:12:09.407Z","cvss":[{"version":"4.0","score":8.2,"vector":"CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L","level":"high","assessor":"cna"},{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"cna"}],"cwes":["CWE-755"],"updated_at":"2026-11-02T14:33:57.638551Z"}],"euvd":[{"id":"EUVD-2024-42496","description":"An Improper Handling of Exceptional Conditions vulnerability in the Routing Protocol Daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows a network-based, unauthenticated attacker to cause Denial of Service (DoS).\n\nWhen a BGP UPDATE with malformed path attribute is received over an established BGP session, rpd crashes and restarts. \n\nContinuous receipt of a BGP UPDATE with a specifically malformed path attribute will create a sustained Denial of Service (DoS) condition for impacted devices. While this issue affects systems running 32-bit and 64-bit systems, the probability of impact on 64-bit system is extremely low. \nAccording to  KB25803  https://supportportal.juniper.net/s/article/Junos-How-to-check-if-Junos-OS-is-64-or-32-bit-on-a-router , customers can confirm 32-bit or 64-bit system via the ' show version detail ' command:\n\n\n\n     lab@router\u003e show version detail| match 32\n     JUNOS 32-bit kernel Software Suite \n\n     lab@router\u003e show version detail| match 64\n     JUNOS 64-bit kernel Software Suite \n\n\nThis issue affects:\n\n Juniper Networks Junos OS: \n\n  *  All versions before 21.4R3-S8, \n  *  from 22.2 before 22.2R3-S4, \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\n Juniper Networks Junos OS Evolved:   *  All versions before 21.4R3-S8-EVO, \n  *  from 22.2 before 22.2R3-S4-EVO, \n  *  from 22.4 before 22.4R3-S3-EVO,\n  *  from 23.2 before 23.2R2-S1-EVO, \n  *  from 23.4 before 23.4R1-S2-EVO, 23.4R2-EVO.","status":"published","published":"2024-10-11T15:23:08Z","modified":"2024-10-22T19:12:09Z","cvss":[{"version":"4.0","score":8.2,"vector":"CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L","level":"high"}],"updated_at":"2026-11-03T00:05:22.224445Z"}],"ghsa":[{"id":"GHSA-79v4-xhfm-cr97","title":"An Improper Handling of Exceptional Conditions vulnerability in the Routing Protocol Daemon (rpd)...","description":"An Improper Handling of Exceptional Conditions vulnerability in the Routing Protocol Daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows a network-based, unauthenticated attacker to cause Denial of Service (DoS).\n\nWhen a BGP UPDATE with malformed path attribute is received over an established BGP session, rpd crashes and restarts. \n\nContinuous receipt of a BGP UPDATE with a specifically malformed path attribute will create a sustained Denial of Service (DoS) condition for impacted devices.\n\nThis issue affects:\n\n Juniper Networks Junos OS: \n\n\n\n  *  All versions before 21.4R3-S8, \n  *  from 22.2 before 22.2R3-S4, \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\n Juniper Networks Junos OS Evolved: \n\n  *  All versions before 21.4R3-S8-EVO, \n  *  from 22.2 before 22.2R3-S4-EVO, \n  *  from 22.4 before 22.4R3-S3-EVO,\n  *  from 23.2 before 23.2R2-S1-EVO, \n  *  from 23.4 before 23.4R1-S2-EVO, 23.4R2-EVO.","status":"published","published":"2024-10-11T18:32:49Z","modified":"2024-10-11T18:32:56Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-755"],"updated_at":"2026-11-02T14:58:29.079883Z"}],"nvd":[{"id":"CVE-2024-47491","description":"An Improper Handling of Exceptional Conditions vulnerability in the Routing Protocol Daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows a network-based, unauthenticated attacker to cause Denial of Service (DoS).\n\nWhen a BGP UPDATE with malformed path attribute is received over an established BGP session, rpd crashes and restarts. \n\nContinuous receipt of a BGP UPDATE with a specifically malformed path attribute will create a sustained Denial of Service (DoS) condition for impacted devices. While this issue affects systems running 32-bit and 64-bit systems, the probability of impact on 64-bit system is extremely low. \nAccording to  KB25803  https://supportportal.juniper.net/s/article/Junos-How-to-check-if-Junos-OS-is-64-or-32-bit-on-a-router , customers can confirm 32-bit or 64-bit system via the ' show version detail ' command:\n\n\n\n     lab@router\u003e show version detail| match 32\n     JUNOS 32-bit kernel Software Suite \n\n     lab@router\u003e show version detail| match 64\n     JUNOS 64-bit kernel Software Suite \n\n\nThis issue affects:\n\n Juniper Networks Junos OS: \n\n  *  All versions before 21.4R3-S8, \n  *  from 22.2 before 22.2R3-S4, \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\n Juniper Networks Junos OS Evolved:   *  All versions before 21.4R3-S8-EVO, \n  *  from 22.2 before 22.2R3-S4-EVO, \n  *  from 22.4 before 22.4R3-S3-EVO,\n  *  from 23.2 before 23.2R2-S1-EVO, \n  *  from 23.4 before 23.4R1-S2-EVO, 23.4R2-EVO.","status":"published","published":"2024-10-11T16:15:09.06Z","modified":"2026-06-17T07:57:10.317Z","cvss":[{"version":"4.0","score":8.2,"vector":"CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high","assessor":"secondary"},{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"secondary"}],"cwes":["CWE-755"],"updated_at":"2026-11-02T14:10:31.879321Z"}]}}