gsd-2023-42818
Vulnerability from gsd
Modified
2023-12-13 01:20
Details
JumpServer is an open source bastion host. When users enable MFA and use a public key for authentication, the Koko SSH server does not verify the corresponding SSH private key. An attacker could exploit a vulnerability by utilizing a disclosed public key to attempt brute-force authentication against the SSH service This issue has been patched in versions 3.6.5 and 3.5.6. Users are advised to upgrade. There are no known workarounds for this issue.
Aliases
Aliases
CVE-2023-42818


To clipboard 

{
   GSD: {
      alias: "CVE-2023-42818",
      id: "GSD-2023-42818",
   },
   gsd: {
      metadata: {
         exploitCode: "unknown",
         remediation: "unknown",
         reportConfidence: "confirmed",
         type: "vulnerability",
      },
      osvSchema: {
         aliases: [
            "CVE-2023-42818",
         ],
         details: "JumpServer is an open source bastion host. When users enable MFA and use a public key for authentication, the Koko SSH server does not verify the corresponding SSH private key. An attacker could exploit a vulnerability by utilizing a disclosed public key to attempt brute-force authentication against the SSH service This issue has been patched in versions 3.6.5 and 3.5.6. Users are advised to upgrade. There are no known workarounds for this issue.",
         id: "GSD-2023-42818",
         modified: "2023-12-13T01:20:21.915997Z",
         schema_version: "1.4.0",
      },
   },
   namespaces: {
      "cve.org": {
         CVE_data_meta: {
            ASSIGNER: "security-advisories@github.com",
            ID: "CVE-2023-42818",
            STATE: "PUBLIC",
         },
         affects: {
            vendor: {
               vendor_data: [
                  {
                     product: {
                        product_data: [
                           {
                              product_name: "jumpserver",
                              version: {
                                 version_data: [
                                    {
                                       version_affected: "=",
                                       version_value: ">= 3.6.0, < 3.6.5",
                                    },
                                    {
                                       version_affected: "=",
                                       version_value: "< 3.5.6",
                                    },
                                 ],
                              },
                           },
                        ],
                     },
                     vendor_name: "jumpserver",
                  },
               ],
            },
         },
         data_format: "MITRE",
         data_type: "CVE",
         data_version: "4.0",
         description: {
            description_data: [
               {
                  lang: "eng",
                  value: "JumpServer is an open source bastion host. When users enable MFA and use a public key for authentication, the Koko SSH server does not verify the corresponding SSH private key. An attacker could exploit a vulnerability by utilizing a disclosed public key to attempt brute-force authentication against the SSH service This issue has been patched in versions 3.6.5 and 3.5.6. Users are advised to upgrade. There are no known workarounds for this issue.",
               },
            ],
         },
         impact: {
            cvss: [
               {
                  attackComplexity: "LOW",
                  attackVector: "NETWORK",
                  availabilityImpact: "LOW",
                  baseScore: 5.4,
                  baseSeverity: "MEDIUM",
                  confidentialityImpact: "NONE",
                  integrityImpact: "LOW",
                  privilegesRequired: "NONE",
                  scope: "UNCHANGED",
                  userInteraction: "REQUIRED",
                  vectorString: "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L",
                  version: "3.1",
               },
            ],
         },
         problemtype: {
            problemtype_data: [
               {
                  description: [
                     {
                        cweId: "CWE-287",
                        lang: "eng",
                        value: "CWE-287: Improper Authentication",
                     },
                  ],
               },
            ],
         },
         references: {
            reference_data: [
               {
                  name: "https://github.com/jumpserver/jumpserver/security/advisories/GHSA-jv3c-27cv-w8jv",
                  refsource: "MISC",
                  url: "https://github.com/jumpserver/jumpserver/security/advisories/GHSA-jv3c-27cv-w8jv",
               },
            ],
         },
         source: {
            advisory: "GHSA-jv3c-27cv-w8jv",
            discovery: "UNKNOWN",
         },
      },
      "nvd.nist.gov": {
         configurations: {
            CVE_data_version: "4.0",
            nodes: [
               {
                  children: [],
                  cpe_match: [
                     {
                        cpe23Uri: "cpe:2.3:a:fit2cloud:jumpserver:*:*:*:*:*:*:*:*",
                        cpe_name: [],
                        versionEndExcluding: "3.6.5",
                        versionStartIncluding: "3.6.0",
                        vulnerable: true,
                     },
                     {
                        cpe23Uri: "cpe:2.3:a:fit2cloud:jumpserver:*:*:*:*:*:*:*:*",
                        cpe_name: [],
                        versionEndExcluding: "3.5.6",
                        vulnerable: true,
                     },
                  ],
                  operator: "OR",
               },
            ],
         },
         cve: {
            CVE_data_meta: {
               ASSIGNER: "security-advisories@github.com",
               ID: "CVE-2023-42818",
            },
            data_format: "MITRE",
            data_type: "CVE",
            data_version: "4.0",
            description: {
               description_data: [
                  {
                     lang: "en",
                     value: "JumpServer is an open source bastion host. When users enable MFA and use a public key for authentication, the Koko SSH server does not verify the corresponding SSH private key. An attacker could exploit a vulnerability by utilizing a disclosed public key to attempt brute-force authentication against the SSH service This issue has been patched in versions 3.6.5 and 3.5.6. Users are advised to upgrade. There are no known workarounds for this issue.",
                  },
               ],
            },
            problemtype: {
               problemtype_data: [
                  {
                     description: [
                        {
                           lang: "en",
                           value: "CWE-307",
                        },
                     ],
                  },
               ],
            },
            references: {
               reference_data: [
                  {
                     name: "https://github.com/jumpserver/jumpserver/security/advisories/GHSA-jv3c-27cv-w8jv",
                     refsource: "MISC",
                     tags: [
                        "Exploit",
                        "Vendor Advisory",
                     ],
                     url: "https://github.com/jumpserver/jumpserver/security/advisories/GHSA-jv3c-27cv-w8jv",
                  },
               ],
            },
         },
         impact: {
            baseMetricV3: {
               cvssV3: {
                  attackComplexity: "LOW",
                  attackVector: "NETWORK",
                  availabilityImpact: "HIGH",
                  baseScore: 9.8,
                  baseSeverity: "CRITICAL",
                  confidentialityImpact: "HIGH",
                  integrityImpact: "HIGH",
                  privilegesRequired: "NONE",
                  scope: "UNCHANGED",
                  userInteraction: "NONE",
                  vectorString: "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                  version: "3.1",
               },
               exploitabilityScore: 3.9,
               impactScore: 5.9,
            },
         },
         lastModifiedDate: "2023-10-02T19:59Z",
         publishedDate: "2023-09-27T21:15Z",
      },
   },
}


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