{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.1",
    "cveMetadata": {
        "cveId": "CVE-2024-21600",
        "assignerOrgId": "8cbe9d5a-a066-4c94-8978-4b15efeae968",
        "state": "PUBLISHED",
        "assignerShortName": "juniper",
        "dateReserved": "2023-12-27T19:38:25.706Z",
        "datePublished": "2024-01-12T00:53:38.834Z",
        "dateUpdated": "2024-08-01T22:27:35.359Z"
    },
    "containers": {
        "cna": {
            "affected": [
                {
                    "defaultStatus": "unaffected",
                    "platforms": [
                        "PTX1000",
                        "PTX3000",
                        "PTX5000 with FPC3",
                        "PTX10002-60C",
                        "PTX10008/16 with LC110x"
                    ],
                    "product": "Junos OS",
                    "vendor": "Juniper Networks",
                    "versions": [
                        {
                            "lessThan": "20.4R3-S8",
                            "status": "affected",
                            "version": "0",
                            "versionType": "semver"
                        },
                        {
                            "lessThan": "21.1R3-S4",
                            "status": "affected",
                            "version": "21.1",
                            "versionType": "semver"
                        },
                        {
                            "lessThan": "21.2R3-S6",
                            "status": "affected",
                            "version": "21.2",
                            "versionType": "semver"
                        },
                        {
                            "lessThan": "21.3R3-S3",
                            "status": "affected",
                            "version": "21.3",
                            "versionType": "semver"
                        },
                        {
                            "lessThan": "21.4R3-S5",
                            "status": "affected",
                            "version": "21.4",
                            "versionType": "semver"
                        },
                        {
                            "lessThan": "22.1R2-S2, 22.1R3",
                            "status": "affected",
                            "version": "22.1",
                            "versionType": "semver"
                        },
                        {
                            "lessThan": "22.2R2-S1, 22.2R3",
                            "status": "affected",
                            "version": "22.2",
                            "versionType": "semver"
                        }
                    ]
                }
            ],
            "configurations": [
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                            "value": "<p>To be exposed to this issue FTI need to be configured:</p><code>  [ interfaces fti0 unit &lt;unit&gt; tunnel ... ]</code><br/>"
                        }
                    ],
                    "value": "To be exposed to this issue FTI need to be configured:\n\n  [ interfaces fti0 unit <unit> tunnel ... ]\n"
                }
            ],
            "datePublic": "2024-01-10T17:00:00.000Z",
            "descriptions": [
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                            "value": "\n\n<p>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).</p><p>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.</p><p>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.</p><p>The following log message can be seen when the issue occurs:</p><code>Cmerror Op Set: Host Loopback: HOST LOOPBACK WEDGE DETECTED IN PATH ID &lt;id&gt; (URI: /fpc/&lt;fpc&gt;/pfe/&lt;pfe&gt;/cm/&lt;cm&gt;/Host_Loopback/&lt;cm&gt;/HOST_LOOPBACK_MAKE_CMERROR_ID[&lt;id&gt;])</code><br><p>This issue affects Juniper Networks Junos OS:</p><p></p><ul><li>All versions earlier than 20.4R3-S8;</li><li>21.1 versions earlier than 21.1R3-S4;</li><li>21.2 versions earlier than 21.2R3-S6;</li><li>21.3 versions earlier than 21.3R3-S3;</li><li>21.4 versions earlier than 21.4R3-S5;</li><li>22.1 versions earlier than 22.1R2-S2, 22.1R3;</li><li>22.2 versions earlier than 22.2R2-S1, 22.2R3.</li></ul><p></p>\n\n"
                        }
                    ],
                    "value": "\nAn 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).\n\nWhen 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.\n\nPlease 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.\n\nThe following log message can be seen when the issue occurs:\n\nCmerror Op Set: Host Loopback: HOST LOOPBACK WEDGE DETECTED IN PATH ID <id> (URI: /fpc/<fpc>/pfe/<pfe>/cm/<cm>/Host_Loopback/<cm>/HOST_LOOPBACK_MAKE_CMERROR_ID[<id>])\nThis issue affects Juniper Networks Junos OS:\n\n\n\n  *  All versions earlier than 20.4R3-S8;\n  *  21.1 versions earlier than 21.1R3-S4;\n  *  21.2 versions earlier than 21.2R3-S6;\n  *  21.3 versions earlier than 21.3R3-S3;\n  *  21.4 versions earlier than 21.4R3-S5;\n  *  22.1 versions earlier than 22.1R2-S2, 22.1R3;\n  *  22.2 versions earlier than 22.2R2-S1, 22.2R3.\n\n\n\n\n\n\n"
                }
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                            "value": "<p>Juniper SIRT is not aware of any malicious exploitation of this vulnerability.</p>"
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                    "value": "Juniper SIRT is not aware of any malicious exploitation of this vulnerability.\n\n"
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "attackComplexity": "LOW",
                        "attackVector": "ADJACENT_NETWORK",
                        "availabilityImpact": "HIGH",
                        "baseScore": 6.5,
                        "baseSeverity": "MEDIUM",
                        "confidentialityImpact": "NONE",
                        "integrityImpact": "NONE",
                        "privilegesRequired": "NONE",
                        "scope": "UNCHANGED",
                        "userInteraction": "NONE",
                        "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
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            "problemTypes": [
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                    "descriptions": [
                        {
                            "cweId": "CWE-76",
                            "description": "CWE-76 Improper Neutralization of Equivalent Special Elements",
                            "lang": "en",
                            "type": "CWE"
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                            "description": "Denial of Service (DoS)",
                            "lang": "en"
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                    "url": "https://supportportal.juniper.net/JSA75741"
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                            "value": "<p>The following software releases have been updated to resolve this specific issue: Junos OS 20.4R3-S8, 21.1R3-S4, 21.2R3-S6, 21.3R3-S3, 21.4R3-S5, 22.1R2-S2, 22.1R3, 22.2R2-S1, 22.2R3, 22.3R1, and all subsequent releases.</p>"
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                    "value": "The following software releases have been updated to resolve this specific issue: Junos OS 20.4R3-S8, 21.1R3-S4, 21.2R3-S6, 21.3R3-S3, 21.4R3-S5, 22.1R2-S2, 22.1R3, 22.2R2-S1, 22.2R3, 22.3R1, and all subsequent releases.\n\n"
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            "source": {
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            "title": "Junos OS: PTX Series: In an FTI scenario MPLS packets hitting reject next-hop will cause a host path wedge condition",
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                            "value": "<p>The issue can be prevented by configuring a limit for reject packets via:</p><code>  [ system ddos-protection protocols reject aggregate bandwidth 20 ] </code><br/>"
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                    "value": "The issue can be prevented by configuring a limit for reject packets via:\n\n  [ system ddos-protection protocols reject aggregate bandwidth 20 ] \n"
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