ghsa-c9pj-4j3g-856x
Vulnerability from github
Published
2023-10-13 00:30
Modified
2024-04-04 08:36
Severity ?
6.5 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Details

An Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability in the management daemon (mgd) process of Juniper Networks Junos OS and Junos OS Evolved allows a network-based authenticated low-privileged attacker, by executing a specific command via NETCONF, to cause a CPU Denial of Service to the device's control plane.

This issue affects:

Juniper Networks Junos OS

  • All versions prior to 20.4R3-S7;
  • 21.2 versions prior to 21.2R3-S5;
  • 21.3 versions prior to 21.3R3-S5;
  • 21.4 versions prior to 21.4R3-S4;
  • 22.1 versions prior to 22.1R3-S2;
  • 22.2 versions prior to 22.2R3;
  • 22.3 versions prior to 22.3R2-S1, 22.3R3;
  • 22.4 versions prior to 22.4R1-S2, 22.4R2.

Juniper Networks Junos OS Evolved

  • All versions prior to 21.4R3-S4-EVO;
  • 22.1 versions prior to 22.1R3-S2-EVO;
  • 22.2 versions prior to 22.2R3-EVO;
  • 22.3 versions prior to 22.3R3-EVO;
  • 22.4 versions prior to 22.4R2-EVO.

An indicator of compromise can be seen by first determining if the NETCONF client is logged in and fails to log out after a reasonable period of time and secondly reviewing the WCPU percentage for the mgd process by running the following command:

mgd process example:

user@device-re#> show system processes extensive | match "mgd|PID" | except last PID USERNAME PRI NICE SIZE RES STATE C TIME WCPU COMMAND 92476 root 100 0 500M 89024K CPU3 3 57.5H 89.60% mgd <<<<<<<<<<< review the high cpu percentage. Example to check for NETCONF activity:

While there is no specific command that shows a specific session in use for NETCONF, you can review logs for UI_LOG_EVENT with "client-mode 'netconf'"

For example:

mgd[38121]: UI_LOGIN_EVENT: User 'root' login, class 'super-user' [38121], ssh-connection '10.1.1.1 201 55480 10.1.1.2 22', client-mode 'netconf'

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{
  "affected": [],
  "aliases": [
    "CVE-2023-44184"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-119"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2023-10-13T00:15:12Z",
    "severity": "MODERATE"
  },
  "details": "\nAn Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability in the management daemon (mgd) process of Juniper Networks Junos OS and Junos OS Evolved allows a network-based authenticated low-privileged attacker, by executing a specific command via NETCONF, to cause a CPU Denial of Service to the device\u0027s control plane.\n\nThis issue affects:\n\nJuniper Networks Junos OS\n\n\n\n  *  All versions prior to 20.4R3-S7;\n  *  21.2 versions prior to 21.2R3-S5;\n  *  21.3 versions prior to 21.3R3-S5;\n  *  21.4 versions prior to 21.4R3-S4;\n  *  22.1 versions prior to 22.1R3-S2;\n  *  22.2 versions prior to 22.2R3;\n  *  22.3 versions prior to 22.3R2-S1, 22.3R3;\n  *  22.4 versions prior to 22.4R1-S2, 22.4R2.\n\n\n\n\nJuniper Networks Junos OS Evolved\n\n\n\n  *  All versions prior to 21.4R3-S4-EVO;\n  *  22.1 versions prior to 22.1R3-S2-EVO;\n  *  22.2 versions prior to 22.2R3-EVO;\n  *  22.3 versions prior to 22.3R3-EVO;\n  *  22.4 versions prior to 22.4R2-EVO.\n\n\n\n\nAn indicator of compromise can be seen by first determining if the NETCONF client is logged in and fails to log out after a reasonable period of time and secondly reviewing the WCPU percentage for the mgd process by running the following command:\n\nmgd process example:\n\nuser@device-re#\u003e show system processes extensive | match \"mgd|PID\" | except last\nPID USERNAME PRI NICE SIZE RES STATE C TIME WCPU COMMAND\n92476 root 100 0 500M 89024K CPU3 3 57.5H 89.60% mgd \u003c\u003c\u003c\u003c\u003c\u003c\u003c\u003c\u003c\u003c\u003c review the high cpu percentage.\nExample to check for NETCONF activity:\n\nWhile there is no specific command that shows a specific session in use for NETCONF, you can review logs for UI_LOG_EVENT with \"client-mode \u0027netconf\u0027\"\n\nFor example:\n\nmgd[38121]: UI_LOGIN_EVENT: User \u0027root\u0027 login, class \u0027super-user\u0027 [38121], ssh-connection \u002710.1.1.1 201 55480 10.1.1.2 22\u0027, client-mode \u0027netconf\u0027\n\n",
  "id": "GHSA-c9pj-4j3g-856x",
  "modified": "2024-04-04T08:36:46Z",
  "published": "2023-10-13T00:30:19Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-44184"
    },
    {
      "type": "WEB",
      "url": "https://supportportal.juniper.net/JSA73147"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}


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