CVE-2024-21600

Что произошло

An Improper Neutralization of Equivalent Special Elements vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS on PTX Series allows a unauthenticated, adjacent attacker to cause a Denial of Service (DoS). When MPLS packets are meant to be sent to a flexible tunnel interface (FTI) and if the FTI tunnel is down, these will hit the reject NH, due to which the packets get sent to the CPU and cause a host path wedge condition. This will cause the FPC to hang and requires a manual restart to recover. Please note that this issue specifically affects PTX1000, PTX3000, PTX5000 with FPC3, PTX10002-60C, and PTX10008/16 with LC110x. Other PTX Series devices and Line Cards (LC) are not affected. The following log message can be seen when the issue occurs: Cmerror Op Set: Host Loopback: HOST LOOPBACK WEDGE DETECTED IN PATH ID (URI: /fpc//pfe//cm//Host_Loopback//HOST_LOOPBACK_MAKE_CMERROR_ID[]) This issue affects Juniper Networks Junos OS: * All versions earlier than 20.4R3-S8; * 21.1 versions earlier than 21.1R3-S4; * 21.2 versions earlier than 21.2R3-S6; * 21.3 versions earlier than 21.3R3-S3; * 21.4 versions earlier than 21.4R3-S5; * 22.1 versions earlier than 22.1R2-S2, 22.1R3; * 22.2 versions earlier than 22.2R2-S1, 22.2R3.

Что делать

dpkg-query -W -f='${Package}	${Version}\n'

rpm -qa --qf '%{NAME}\t%{VERSION}-%{RELEASE}\n'

Get-HotFix | Select-Object HotFixID, InstalledOn

Продукты и затронутые версии

{
  "status": "affected",
  "version": "0",
  "lessThan": "20.4R3-S8",
  "versionType": "semver"
}

{
  "status": "affected",
  "version": "21.1",
  "lessThan": "21.1R3-S4",
  "versionType": "semver"
}

{
  "status": "affected",
  "version": "21.2",
  "lessThan": "21.2R3-S6",
  "versionType": "semver"
}

{
  "status": "affected",
  "version": "21.3",
  "lessThan": "21.3R3-S3",
  "versionType": "semver"
}

{
  "status": "affected",
  "version": "21.4",
  "lessThan": "21.4R3-S5",
  "versionType": "semver"
}

{
  "status": "affected",
  "version": "22.1",
  "lessThan": "22.1R2-S2, 22.1R3",
  "versionType": "semver"
}

{
  "status": "affected",
  "version": "22.2",
  "lessThan": "22.2R2-S1, 22.2R3",
  "versionType": "semver"
}

CVSS: оценки и векторы

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Источники и ссылки

{
  "cwes": [
    "cve"
  ],
  "epss": {
    "source": "epss",
    "received_at": "2026-11-04T21:07:20.515214+00:00"
  },
  "title": {
    "source": "cve",
    "received_at": "2026-10-28T23:24:46.551956+00:00"
  },
  "scores": [
    "cve"
  ],
  "status": {
    "source": "cve",
    "received_at": "2026-10-28T23:24:46.551956+00:00"
  },
  "affected": [
    "cve"
  ],
  "published": {
    "source": "cve",
    "received_at": "2026-10-28T23:24:46.551956+00:00"
  },
  "solutions": [
    "cve"
  ],
  "percentile": {
    "source": "epss",
    "received_at": "2026-11-04T21:07:20.515214+00:00"
  },
  "references": [
    "cve"
  ],
  "description": {
    "source": "cve",
    "received_at": "2026-10-28T23:24:46.551956+00:00"
  },
  "workarounds": [
    "cve"
  ],
  "configurations": []
}

Хронология записи

1. Данные обновлены05.11.2026, 00:07
2. Данные обновлены04.11.2026, 00:06
3. Данные обновлены03.11.2026, 00:06
4. Данные обновлены02.11.2026, 00:06
5. Данные обновлены31.10.2026, 11:53
6. Данные обновлены30.10.2026, 12:41
7. Данные обновлены29.10.2026, 10:06
8. Опубликована29.10.2026, 02:25

Личная заметка и статус

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