{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.1",
    "cveMetadata": {
        "state": "PUBLISHED",
        "cveId": "CVE-2019-0053",
        "assignerOrgId": "8cbe9d5a-a066-4c94-8978-4b15efeae968",
        "assignerShortName": "juniper",
        "dateUpdated": "2024-09-16T19:15:29.698Z",
        "dateReserved": "2018-10-11T00:00:00.000Z",
        "datePublished": "2019-07-11T19:40:52.382Z"
    },
    "containers": {
        "cna": {
            "title": "Junos OS: Insufficient validation of environment variables in telnet client may lead to stack-based buffer overflow",
            "datePublic": "2019-07-10T00:00:00.000Z",
            "providerMetadata": {
                "orgId": "8cbe9d5a-a066-4c94-8978-4b15efeae968",
                "shortName": "juniper",
                "dateUpdated": "2024-01-02T00:17:56.689Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "Insufficient validation of environment variables in the telnet client supplied in Junos OS can lead to stack-based buffer overflows, which can be exploited to bypass veriexec restrictions on Junos OS. A stack-based overflow is present in the handling of environment variables when connecting via the telnet client to remote telnet servers. This issue only affects the telnet client — accessible from the CLI or shell — in Junos OS. Inbound telnet services are not affected by this issue. This issue affects: Juniper Networks Junos OS: 12.3 versions prior to 12.3R12-S13; 12.3X48 versions prior to 12.3X48-D80; 14.1X53 versions prior to 14.1X53-D130, 14.1X53-D49; 15.1 versions prior to 15.1F6-S12, 15.1R7-S4; 15.1X49 versions prior to 15.1X49-D170; 15.1X53 versions prior to 15.1X53-D237, 15.1X53-D496, 15.1X53-D591, 15.1X53-D69; 16.1 versions prior to 16.1R3-S11, 16.1R7-S4; 16.2 versions prior to 16.2R2-S9; 17.1 versions prior to 17.1R3; 17.2 versions prior to 17.2R1-S8, 17.2R2-S7, 17.2R3-S1; 17.3 versions prior to 17.3R3-S4; 17.4 versions prior to 17.4R1-S6, 17.4R2-S3, 17.4R3; 18.1 versions prior to 18.1R2-S4, 18.1R3-S3; 18.2 versions prior to 18.2R1-S5, 18.2R2-S2, 18.2R3; 18.2X75 versions prior to 18.2X75-D40; 18.3 versions prior to 18.3R1-S3, 18.3R2; 18.4 versions prior to 18.4R1-S2, 18.4R2."
                }
            ],
            "affected": [
                {
                    "vendor": "Juniper Networks",
                    "product": "Junos OS",
                    "versions": [
                        {
                            "version": "12.3 versions prior to 12.3R12-S13",
                            "status": "affected"
                        },
                        {
                            "version": "12.3X48 versions prior to 12.3X48-D80",
                            "status": "affected"
                        },
                        {
                            "version": "14.1X53 versions prior to 14.1X53-D130 and 14.1X53-D49",
                            "status": "affected"
                        },
                        {
                            "version": "15.1 versions prior to 15.1F6-S12 and15.1R7-S4",
                            "status": "affected"
                        },
                        {
                            "version": "15.1X49 versions prior to 15.1X49-D170",
                            "status": "affected"
                        },
                        {
                            "version": "15.1X53 versions prior to 15.1X53-D237 and 15.1X53-D496 and 15.1X53-D591 and 15.1X53-D69",
                            "status": "affected"
                        },
                        {
                            "version": "16.1 versions prior to 16.1R3-S11 and 16.1R7-S4",
                            "status": "affected"
                        },
                        {
                            "version": "16.2 versions prior to 16.2R2-S9",
                            "status": "affected"
                        },
                        {
                            "version": "17.1 versions prior to 17.1R3",
                            "status": "affected"
                        },
                        {
                            "version": "17.2 versions prior to 17.2R1-S8 and 17.2R2-S7 and 17.2R3-S1",
                            "status": "affected"
                        },
                        {
                            "version": "17.3 versions prior to 17.3R3-S4",
                            "status": "affected"
                        },
                        {
                            "version": "17.4 versions prior to 17.4R1-S6 and 17.4R2-S3 and 17.4R3",
                            "status": "affected"
                        },
                        {
                            "version": "18.1 versions prior to 18.1R2-S4 and 18.1R3-S3",
                            "status": "affected"
                        },
                        {
                            "version": "18.2 versions prior to 18.2R1-S5 and 18.2R2-S2 and 18.2R3",
                            "status": "affected"
                        },
                        {
                            "version": "18.2X75 versions prior to 18.2X75-D40",
                            "status": "affected"
                        },
                        {
                            "version": "18.3 versions prior to 18.3R1-S3 and 18.3R2",
                            "status": "affected"
                        },
                        {
                            "version": "18.4 versions prior to 18.4R1-S2 and 18.4R2",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://kb.juniper.net/JSA10947"
                },
                {
                    "url": "https://www.exploit-db.com/exploits/45982"
                },
                {
                    "name": "FreeBSD-SA-19:12",
                    "tags": [
                        "vendor-advisory"
                    ],
                    "url": "https://security.FreeBSD.org/advisories/FreeBSD-SA-19:12.telnet.asc"
                },
                {
                    "name": "20190724 FreeBSD Security Advisory FreeBSD-SA-19:12.telnet",
                    "tags": [
                        "mailing-list"
                    ],
                    "url": "https://seclists.org/bugtraq/2019/Jul/45"
                },
                {
                    "url": "http://packetstormsecurity.com/files/153746/FreeBSD-Security-Advisory-FreeBSD-SA-19-12.telnet.html"
                },
                {
                    "name": "[debian-lts-announce] 20221125 [SECURITY] [DLA 3205-1] inetutils security update",
                    "tags": [
                        "mailing-list"
                    ],
                    "url": "https://lists.debian.org/debian-lts-announce/2022/11/msg00033.html"
                },
                {
                    "name": "[debian-lts-announce] 20231008 [SECURITY] [DLA 3611-1] inetutils security update",
                    "tags": [
                        "mailing-list"
                    ],
                    "url": "https://lists.debian.org/debian-lts-announce/2023/10/msg00013.html"
                },
                {
                    "url": "https://lists.debian.org/debian-lts-announce/2023/10/msg00013.html"
                }
            ],
            "credits": [
                {
                    "lang": "en",
                    "value": "Matthew Hickey, Hacker House (https://hacker.house/) who reported this issue on November 12, 2018."
                }
            ],
            "metrics": [
                {
                    "cvssV3_0": {
                        "version": "3.0",
                        "vectorString": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                        "attackVector": "LOCAL",
                        "attackComplexity": "LOW",
                        "privilegesRequired": "LOW",
                        "userInteraction": "NONE",
                        "scope": "UNCHANGED",
                        "confidentialityImpact": "HIGH",
                        "integrityImpact": "HIGH",
                        "availabilityImpact": "HIGH",
                        "baseScore": 7.8,
                        "baseSeverity": "HIGH"
                    }
                }
            ],
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "type": "CWE",
                            "lang": "en",
                            "description": "CWE-121 Stack-based Buffer Overflow",
                            "cweId": "CWE-121"
                        }
                    ]
                }
            ],
            "x_generator": {
                "engine": "Vulnogram 0.0.6"
            },
            "source": {
                "advisory": "JSA10947",
                "defect": [
                    "1409847"
                ],
                "discovery": "EXTERNAL"
            },
            "workarounds": [
                {
                    "lang": "en",
                    "value": "Since this issue is specific to outbound connections to a malicious host from the local telnet client, mitigation includes:\n* limit access to the Junos CLI and shell from only from trusted administrators\n* block outbound telnet connections\n* deny access to the telnet command and shell per user or user class"
                }
            ],
            "exploits": [
                {
                    "lang": "en",
                    "value": "Juniper SIRT is not aware of any malicious exploitation of this vulnerability."
                }
            ],
            "solutions": [
                {
                    "lang": "en",
                    "value": "The following software releases have been updated to resolve this specific issue: 12.3R12-S13, 12.3X48-D80, 12.3X48-D85, 14.1X53-D130, 14.1X53-D49, 15.1F6-S12, 15.1R7-S4, 15.1X49-D170, 15.1X53-D237, 15.1X53-D496, 15.1X53-D591, 15.1X53-D69, 16.1R3-S11, 16.1R7-S4, 16.2R2-S9, 17.1R3, 17.2R1-S8, 17.2R2-S7, 17.2R3-S1, 17.3R3-S4, 17.4R1-S6, 17.4R2-S3, 17.4R3, 18.1R2-S4, 18.1R3-S3, 18.2R1-S5, 18.2R2-S2, 18.2R3, 18.2X75-D40, 18.3R1-S3, 18.3R2, 18.4R1-S2, 18.4R2, 19.1R1, and all subsequent releases."
                }
            ]
        },
        "adp": [
            {
                "providerMetadata": {
                    "orgId": "af854a3a-2127-422b-91ae-364da2661108",
                    "shortName": "CVE",
                    "dateUpdated": "2024-08-04T17:37:07.225Z"
                },
                "title": "CVE Program Container",
                "references": [
                    {
                        "url": "https://kb.juniper.net/JSA10947",
                        "tags": [
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                    },
                    {
                        "url": "https://www.exploit-db.com/exploits/45982",
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                    {
                        "name": "FreeBSD-SA-19:12",
                        "tags": [
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                        "url": "https://security.FreeBSD.org/advisories/FreeBSD-SA-19:12.telnet.asc"
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                        "url": "http://packetstormsecurity.com/files/153746/FreeBSD-Security-Advisory-FreeBSD-SA-19-12.telnet.html",
                        "tags": [
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                    {
                        "name": "[debian-lts-announce] 20221125 [SECURITY] [DLA 3205-1] inetutils security update",
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                        "name": "[debian-lts-announce] 20231008 [SECURITY] [DLA 3611-1] inetutils security update",
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    }
}