{
    "CVE_data_meta": {
        "ASSIGNER": "sirt@juniper.net",
        "DATE_PUBLIC": "2022-04-13T07:00:00.000Z",
        "ID": "CVE-2022-22198",
        "STATE": "PUBLIC",
        "TITLE": "Junos OS: MX MS-MPC or MS-MIC, or SRX SPC crashes if it receives a SIP message with a specific contact header format"
    },
    "affects": {
        "vendor": {
            "vendor_data": [
                {
                    "product": {
                        "product_data": [
                            {
                                "product_name": "Junos OS",
                                "version": {
                                    "version_data": [
                                        {
                                            "platform": "MX Series, SRX Series",
                                            "version_affected": "<",
                                            "version_name": "20.4",
                                            "version_value": "20.4R3"
                                        },
                                        {
                                            "platform": "MX Series, SRX Series",
                                            "version_affected": "<",
                                            "version_name": "21.1",
                                            "version_value": "21.1R2-S1, 21.1R3"
                                        },
                                        {
                                            "platform": "MX Series, SRX Series",
                                            "version_affected": "<",
                                            "version_name": "21.2",
                                            "version_value": "21.2R2"
                                        },
                                        {
                                            "platform": "MX Series, SRX Series",
                                            "version_affected": "!<",
                                            "version_value": "20.4R1"
                                        }
                                    ]
                                }
                            }
                        ]
                    },
                    "vendor_name": "Juniper Networks"
                }
            ]
        }
    },
    "configuration": [
        {
            "lang": "eng",
            "value": "To be affected the SIP ALG needs to be enabled, either implicitly / by default or by way of configuration. Please verify on SRX with:\n\n  user@host> show security alg status | match sip\n  SIP : Enabled\n\nPlease verify on MX whether the following is configured:\n\n  [ services ... rule <rule-name> (term <term-name>) from/match application/application-set <name> ]\n\nwhere either\na. name = junos-sip or\nan application or application-set refers to SIP:\nb. [ applications application <name> application-protocol sip ] or\nc. [ applications application-set <name> application junos-sip ]"
        }
    ],
    "data_format": "MITRE",
    "data_type": "CVE",
    "data_version": "4.0",
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "An Access of Uninitialized Pointer vulnerability in the SIP ALG of Juniper Networks Junos OS allows an unauthenticated network-based attacker to cause a Denial of Service (DoS). Continued receipt of these specific packets will cause a sustained Denial of Service condition. On all MX and SRX platforms, if the SIP ALG is enabled, an MS-MPC or MS-MIC, or SPC will crash if it receives a SIP message with a specific contact header format. This issue affects Juniper Networks Junos OS on MX Series and SRX Series: 20.4 versions prior to 20.4R3; 21.1 versions prior to 21.1R2-S1, 21.1R3; 21.2 versions prior to 21.2R2. This issue does not affect versions prior to 20.4R1."
            }
        ]
    },
    "exploit": [
        {
            "lang": "eng",
            "value": "Juniper SIRT is not aware of any malicious exploitation of this vulnerability."
        }
    ],
    "generator": {
        "engine": "Vulnogram 0.0.9"
    },
    "impact": {
        "cvss": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
        }
    },
    "problemtype": {
        "problemtype_data": [
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "CWE-824 Access of Uninitialized Pointer"
                    }
                ]
            },
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "Denial of Service (DoS)"
                    }
                ]
            }
        ]
    },
    "references": {
        "reference_data": [
            {
                "name": "https://kb.juniper.net/JSA69513",
                "refsource": "CONFIRM",
                "url": "https://kb.juniper.net/JSA69513"
            }
        ]
    },
    "solution": [
        {
            "lang": "eng",
            "value": "The following software releases have been updated to resolve this specific issue: 20.4R3, 21.1R2-S1, 21.1R3, 21.2R2, 21.3R1, and all subsequent releases.\n"
        }
    ],
    "source": {
        "advisory": "JSA69513",
        "defect": [
            "1612450"
        ],
        "discovery": "USER"
    },
    "work_around": [
        {
            "lang": "eng",
            "value": "There are no viable workarounds for this issue, but it should be considered to disable the SIP ALG if it's not strictly needed."
        }
    ]
}