GHSA-37F4-V37X-33QJ

Vulnerability from github – Published: 2024-10-11 18:32 – Updated: 2024-10-11 18:32
VLAI
Details

An Improper Handling of Exceptional Conditions vulnerability in the rpd-server of Juniper Networks Junos OS and Junos OS Evolved within cRPD allows an unauthenticated network-based attacker sending crafted TCP traffic to the routing engine (RE) to cause a CPU-based Denial of Service (DoS).

If specially crafted TCP traffic is received by the control plane, or a TCP session terminates unexpectedly, it will cause increased control plane CPU utilization by the rpd-server process.

While not explicitly required, the impact is more severe when RIB sharding is enabled.

Task accounting shows unexpected reads by the RPD Server jobs for shards:

user@junos> show task accounting detail ... read:RPD Server.0.0.0.0+780.192.168.0.78+48886 TOT:00000003.00379787 MAX:00000000.00080516 RUNS: 233888\ read:RPD Server.0.0.0.0+780.192.168.0.78+49144 TOT:00000004.00007565 MAX:00000000.00080360 RUNS: 233888\ read:RPD Server.0.0.0.0+780.192.168.0.78+49694 TOT:00000003.00600584 MAX:00000000.00080463 RUNS: 233888\ read:RPD Server.0.0.0.0+780.192.168.0.78+50246 TOT:00000004.00346998 MAX:00000000.00080338 RUNS: 233888\

This issue affects:

Junos OS with cRPD: 

  • All versions before 21.2R3-S8, 
  • 21.4 before 21.4R3-S7, 
  • 22.1 before 22.1R3-S6, 
  • 22.2 before 22.2R3-S4, 
  • 22.3 before 22.3R3-S3, 
  • 22.4 before 22.4R3-S2, 
  • 23.2 before 23.2R2-S2, 
  • 24.2 before 24.2R2; 

Junos OS Evolved with cRPD: 

  • All versions before 21.4R3-S7-EVO, 
  • 22.2 before 22.2R3-S4-EVO, 
  • 22.3 before 22.3R3-S3-EVO, 
  • 22.4 before 22.4R3-S2-EVO, 
  • 23.2 before 23.2R2-EVO.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
8.7 (High)
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/AU:Y/R:U
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{
  "affected": [],
  "aliases": [
    "CVE-2024-39547"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-755"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-10-11T16:15:07Z",
    "severity": "HIGH"
  },
  "details": "An\u00a0Improper Handling of Exceptional Conditions vulnerability in the rpd-server of Juniper Networks Junos OS and Junos OS Evolved within cRPD allows an unauthenticated network-based attacker sending crafted TCP traffic to the routing engine (RE) to cause a CPU-based Denial of Service (DoS).\n\nIf specially crafted TCP traffic is received by the control plane, or a TCP session terminates unexpectedly, it will cause increased control plane CPU utilization by the rpd-server process.\n\nWhile not explicitly required, the impact is more severe when RIB sharding is enabled.\n\nTask accounting shows unexpected reads by the RPD Server jobs for shards:\n\nuser@junos\u003e show task accounting detail\n...\nread:RPD Server.0.0.0.0+780.192.168.0.78+48886 TOT:00000003.00379787 MAX:00000000.00080516 RUNS: 233888\\\nread:RPD Server.0.0.0.0+780.192.168.0.78+49144 TOT:00000004.00007565 MAX:00000000.00080360 RUNS: 233888\\\nread:RPD Server.0.0.0.0+780.192.168.0.78+49694 TOT:00000003.00600584 MAX:00000000.00080463 RUNS: 233888\\\nread:RPD Server.0.0.0.0+780.192.168.0.78+50246 TOT:00000004.00346998 MAX:00000000.00080338 RUNS: 233888\\\n\n\n\nThis issue affects:\n\nJunos OS with cRPD:\u00a0\n\n  *  All versions before 21.2R3-S8,\u00a0\n  *  21.4 before 21.4R3-S7,\u00a0\n  *  22.1 before 22.1R3-S6,\u00a0\n  *  22.2 before 22.2R3-S4,\u00a0\n  *  22.3 before 22.3R3-S3,\u00a0\n  *  22.4 before 22.4R3-S2,\u00a0\n  *  23.2 before 23.2R2-S2,\u00a0\n  *  24.2 before 24.2R2;\u00a0\n\n\nJunos OS Evolved with cRPD:\u00a0\n\n  *  All versions before 21.4R3-S7-EVO,\u00a0\n  *  22.2 before 22.2R3-S4-EVO,\u00a0\n  *  22.3 before 22.3R3-S3-EVO,\u00a0\n  *  22.4 before 22.4R3-S2-EVO,\u00a0\n  *  23.2 before 23.2R2-EVO.",
  "id": "GHSA-37f4-v37x-33qj",
  "modified": "2024-10-11T18:32:49Z",
  "published": "2024-10-11T18:32:49Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-39547"
    },
    {
      "type": "WEB",
      "url": "https://supportportal.juniper.net/JSA88108"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "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:Y/R:U/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}



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