cvelist/2019/0xxx/CVE-2019-0053.json

{
   "CVE_data_meta": {
      "ASSIGNER": "sirt@juniper.net",
      "DATE_PUBLIC": "2019-07-10T16:00:00.000Z",
      "ID": "CVE-2019-0053",
      "STATE": "PUBLIC",
      "TITLE": "Junos OS: Insufficient validation of environment variables in telnet client may lead to stack-based buffer overflow"
   },
   "affects": {
      "vendor": {
         "vendor_data": [
            {
               "product": {
                  "product_data": [
                     {
                        "product_name": "Junos OS",
                        "version": {
                           "version_data": [
                              {
                                 "version_affected": "<",
                                 "version_name": "12.3",
                                 "version_value": "12.3R12-S13"
                              },
                              {
                                 "version_affected": "<",
                                 "version_name": "12.3X48",
                                 "version_value": "12.3X48-D80"
                              },
                              {
                                 "version_affected": "<",
                                 "version_name": "14.1X53",
                                 "version_value": "14.1X53-D130, 14.1X53-D49"
                              },
                              {
                                 "version_affected": "<",
                                 "version_name": "15.1",
                                 "version_value": "15.1F6-S12, 15.1R7-S4"
                              },
                              {
                                 "version_affected": "<",
                                 "version_name": "15.1X49",
                                 "version_value": "15.1X49-D170"
                              },
                              {
                                 "version_affected": "<",
                                 "version_name": "15.1X53",
                                 "version_value": "15.1X53-D237, 15.1X53-D496, 15.1X53-D591, 15.1X53-D69"
                              },
                              {
                                 "version_affected": "<",
                                 "version_name": "16.1",
                                 "version_value": "16.1R3-S11, 16.1R7-S4"
                              },
                              {
                                 "version_affected": "<",
                                 "version_name": "16.2",
                                 "version_value": "16.2R2-S9"
                              },
                              {
                                 "version_affected": "<",
                                 "version_name": "17.1",
                                 "version_value": "17.1R3"
                              },
                              {
                                 "version_affected": "<",
                                 "version_name": "17.2",
                                 "version_value": "17.2R1-S8, 17.2R2-S7, 17.2R3-S1"
                              },
                              {
                                 "version_affected": "<",
                                 "version_name": "17.3",
                                 "version_value": "17.3R3-S4"
                              },
                              {
                                 "version_affected": "<",
                                 "version_name": "17.4",
                                 "version_value": "17.4R1-S6, 17.4R2-S3, 17.4R3"
                              },
                              {
                                 "version_affected": "<",
                                 "version_name": "18.1",
                                 "version_value": "18.1R2-S4, 18.1R3-S3"
                              },
                              {
                                 "version_affected": "<",
                                 "version_name": "18.2",
                                 "version_value": "18.2R1-S5, 18.2R2-S2, 18.2R3"
                              },
                              {
                                 "version_affected": "<",
                                 "version_name": "18.2X75",
                                 "version_value": "18.2X75-D40"
                              },
                              {
                                 "version_affected": "<",
                                 "version_name": "18.3",
                                 "version_value": "18.3R1-S3, 18.3R2"
                              },
                              {
                                 "version_affected": "<",
                                 "version_name": "18.4",
                                 "version_value": "18.4R1-S2, 18.4R2"
                              }
                           ]
                        }
                     }
                  ]
               },
               "vendor_name": "Juniper Networks"
            }
         ]
      }
   },
   "credit": [
      {
         "lang": "eng",
         "value": "Matthew Hickey, Hacker House (https://hacker.house/) who reported this issue on November 12, 2018.\n\n"
      }
   ],
   "data_format": "MITRE",
   "data_type": "CVE",
   "data_version": "4.0",
   "description": {
      "description_data": [
         {
            "lang": "eng",
            "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.\n\nThis issue only affects the telnet client — accessible from the CLI or shell — in Junos OS.  Inbound telnet services are not affected by this issue.\n\nThis issue affects:\nJuniper Networks Junos OS:\n12.3 versions prior to 12.3R12-S13;\n12.3X48 versions prior to 12.3X48-D80;\n14.1X53 versions prior to 14.1X53-D130, 14.1X53-D49;\n15.1 versions prior to 15.1F6-S12, 15.1R7-S4;\n15.1X49 versions prior to 15.1X49-D170;\n15.1X53 versions prior to 15.1X53-D237, 15.1X53-D496, 15.1X53-D591, 15.1X53-D69;\n16.1 versions prior to 16.1R3-S11, 16.1R7-S4;\n16.2 versions prior to 16.2R2-S9;\n17.1 versions prior to 17.1R3;\n17.2 versions prior to 17.2R1-S8, 17.2R2-S7, 17.2R3-S1;\n17.3 versions prior to 17.3R3-S4;\n17.4 versions prior to 17.4R1-S6, 17.4R2-S3, 17.4R3;\n18.1 versions prior to 18.1R2-S4, 18.1R3-S3;\n18.2 versions prior to 18.2R1-S5, 18.2R2-S2, 18.2R3;\n18.2X75 versions prior to 18.2X75-D40;\n18.3 versions prior to 18.3R1-S3, 18.3R2;\n18.4 versions prior to 18.4R1-S2, 18.4R2."
         }
      ]
   },
   "exploit": [
      {
         "lang": "eng",
         "value": "Juniper SIRT is not aware of any malicious exploitation of this vulnerability."
      }
   ],
   "generator": {
      "engine": "Vulnogram 0.0.6"
   },
   "impact": {
      "cvss": {
         "attackComplexity": "LOW",
         "attackVector": "LOCAL",
         "availabilityImpact": "HIGH",
         "baseScore": 7.8,
         "baseSeverity": "HIGH",
         "confidentialityImpact": "HIGH",
         "integrityImpact": "HIGH",
         "privilegesRequired": "LOW",
         "scope": "UNCHANGED",
         "userInteraction": "NONE",
         "vectorString": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
         "version": "3.0"
      }
   },
   "problemtype": {
      "problemtype_data": [
         {
            "description": [
               {
                  "lang": "eng",
                  "value": "CWE-121 Stack-based Buffer Overflow"
               }
            ]
         }
      ]
   },
   "references": {
      "reference_data": [
         {
            "name": "https://kb.juniper.net/JSA10947",
            "refsource": "CONFIRM",
            "url": "https://kb.juniper.net/JSA10947"
         },
         {
            "name": "https://www.exploit-db.com/exploits/45982",
            "refsource": "MISC",
            "url": "https://www.exploit-db.com/exploits/45982"
         }
      ]
   },
   "solution": [
      {
         "lang": "eng",
         "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.\n"
      }
   ],
   "source": {
      "advisory": "JSA10947",
      "defect": [
         "1409847"
      ],
      "discovery": "EXTERNAL"
   },
   "work_around": [
      {
         "lang": "eng",
         "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"
      }
   ]
}