gsd-2023-26438
Vulnerability from gsd
Modified
2023-12-13 01:20
Details
External service lookups for a number of protocols were vulnerable to a time-of-check/time-of-use (TOCTOU) weakness, involving the JDK DNS cache. Attackers that were timing DNS cache expiry correctly were able to inject configuration that would bypass existing network deny-lists. Attackers could exploit this weakness to discover the existence of restricted network infrastructure and service availability. Improvements were made to include deny-lists not only during the check of the provided connection data, but also during use. No publicly available exploits are known.
Aliases
Aliases
CVE-2023-26438


To clipboard 

{
   GSD: {
      alias: "CVE-2023-26438",
      id: "GSD-2023-26438",
   },
   gsd: {
      metadata: {
         exploitCode: "unknown",
         remediation: "unknown",
         reportConfidence: "confirmed",
         type: "vulnerability",
      },
      osvSchema: {
         aliases: [
            "CVE-2023-26438",
         ],
         details: "External service lookups for a number of protocols were vulnerable to a time-of-check/time-of-use (TOCTOU) weakness, involving the JDK DNS cache. Attackers that were timing DNS cache expiry correctly were able to inject configuration that would bypass existing network deny-lists. Attackers could exploit this weakness to discover the existence of restricted network infrastructure and service availability. Improvements were made to include deny-lists not only during the check of the provided connection data, but also during use. No publicly available exploits are known.\n\n",
         id: "GSD-2023-26438",
         modified: "2023-12-13T01:20:53.632978Z",
         schema_version: "1.4.0",
      },
   },
   namespaces: {
      "cve.org": {
         CVE_data_meta: {
            ASSIGNER: "security@open-xchange.com",
            ID: "CVE-2023-26438",
            STATE: "PUBLIC",
         },
         affects: {
            vendor: {
               vendor_data: [
                  {
                     product: {
                        product_data: [
                           {
                              product_name: "OX App Suite",
                              version: {
                                 version_data: [
                                    {
                                       version_affected: "<=",
                                       version_name: "0",
                                       version_value: "7.10.6-rev42",
                                    },
                                 ],
                              },
                           },
                        ],
                     },
                     vendor_name: "OX Software GmbH",
                  },
               ],
            },
         },
         data_format: "MITRE",
         data_type: "CVE",
         data_version: "4.0",
         description: {
            description_data: [
               {
                  lang: "eng",
                  value: "External service lookups for a number of protocols were vulnerable to a time-of-check/time-of-use (TOCTOU) weakness, involving the JDK DNS cache. Attackers that were timing DNS cache expiry correctly were able to inject configuration that would bypass existing network deny-lists. Attackers could exploit this weakness to discover the existence of restricted network infrastructure and service availability. Improvements were made to include deny-lists not only during the check of the provided connection data, but also during use. No publicly available exploits are known.\n\n",
               },
            ],
         },
         generator: {
            engine: "Vulnogram 0.1.0-dev",
         },
         impact: {
            cvss: [
               {
                  attackComplexity: "LOW",
                  attackVector: "NETWORK",
                  availabilityImpact: "NONE",
                  baseScore: 4.3,
                  baseSeverity: "MEDIUM",
                  confidentialityImpact: "LOW",
                  integrityImpact: "NONE",
                  privilegesRequired: "LOW",
                  scope: "UNCHANGED",
                  userInteraction: "NONE",
                  vectorString: "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N",
                  version: "3.1",
               },
            ],
         },
         problemtype: {
            problemtype_data: [
               {
                  description: [
                     {
                        cweId: "CWE-918",
                        lang: "eng",
                        value: "CWE-918 Server-Side Request Forgery (SSRF)",
                     },
                  ],
               },
            ],
         },
         references: {
            reference_data: [
               {
                  name: "https://software.open-xchange.com/products/appsuite/doc/Release_Notes_for_Patch_Release_6230_7.10.6_2023-05-02.pdf",
                  refsource: "MISC",
                  url: "https://software.open-xchange.com/products/appsuite/doc/Release_Notes_for_Patch_Release_6230_7.10.6_2023-05-02.pdf",
               },
               {
                  name: "https://documentation.open-xchange.com/appsuite/security/advisories/csaf/2023/oxas-adv-2023-0003.json",
                  refsource: "MISC",
                  url: "https://documentation.open-xchange.com/appsuite/security/advisories/csaf/2023/oxas-adv-2023-0003.json",
               },
               {
                  name: "http://seclists.org/fulldisclosure/2023/Aug/8",
                  refsource: "MISC",
                  url: "http://seclists.org/fulldisclosure/2023/Aug/8",
               },
               {
                  name: "http://packetstormsecurity.com/files/173943/OX-App-Suite-SSRF-SQL-Injection-Cross-Site-Scripting.html",
                  refsource: "MISC",
                  url: "http://packetstormsecurity.com/files/173943/OX-App-Suite-SSRF-SQL-Injection-Cross-Site-Scripting.html",
               },
            ],
         },
         source: {
            defect: [
               "MWB-1877",
            ],
            discovery: "INTERNAL",
         },
      },
      "nvd.nist.gov": {
         cve: {
            configurations: [
               {
                  nodes: [
                     {
                        cpeMatch: [
                           {
                              criteria: "cpe:2.3:a:open-xchange:open-xchange_appsuite_backend:7.10.6:*:*:*:*:*:*:*",
                              matchCriteriaId: "D41FD049-C028-4C6D-A9D7-9DD1820B2C5F",
                              vulnerable: true,
                           },
                           {
                              criteria: "cpe:2.3:a:open-xchange:open-xchange_appsuite_backend:8.10.0:*:*:*:*:*:*:*",
                              matchCriteriaId: "332D5572-4F7D-498F-9E01-F8555674B4B0",
                              vulnerable: true,
                           },
                        ],
                        negate: false,
                        operator: "OR",
                     },
                  ],
               },
            ],
            descriptions: [
               {
                  lang: "en",
                  value: "External service lookups for a number of protocols were vulnerable to a time-of-check/time-of-use (TOCTOU) weakness, involving the JDK DNS cache. Attackers that were timing DNS cache expiry correctly were able to inject configuration that would bypass existing network deny-lists. Attackers could exploit this weakness to discover the existence of restricted network infrastructure and service availability. Improvements were made to include deny-lists not only during the check of the provided connection data, but also during use. No publicly available exploits are known.\n\n",
               },
               {
                  lang: "es",
                  value: "Las búsquedas de servicios externos para una serie de protocolos eran vulnerables a una debilidad de condición de carrera de tiempo de comprobación/tiempo de uso (TOCTOU), que afectaba a JDK DNS Cache. Los atacantes que sincronizaban correctamente la expiración de la caché DNS podían inyectar una configuración que eludía las listas de denegación de red existentes. Los atacantes podían explotar esta debilidad para descubrir la existencia de una infraestructura de red restringida y la disponibilidad del servicio. Se introdujeron mejoras para incluir de denegación no sólo durante la comprobación de los datos de conexión proporcionados, sino también durante el uso. No se conocen exploits disponibles públicamente. ",
               },
            ],
            id: "CVE-2023-26438",
            lastModified: "2024-01-12T08:15:41.150",
            metrics: {
               cvssMetricV31: [
                  {
                     cvssData: {
                        attackComplexity: "HIGH",
                        attackVector: "NETWORK",
                        availabilityImpact: "NONE",
                        baseScore: 3.1,
                        baseSeverity: "LOW",
                        confidentialityImpact: "LOW",
                        integrityImpact: "NONE",
                        privilegesRequired: "LOW",
                        scope: "UNCHANGED",
                        userInteraction: "NONE",
                        vectorString: "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N",
                        version: "3.1",
                     },
                     exploitabilityScore: 1.6,
                     impactScore: 1.4,
                     source: "nvd@nist.gov",
                     type: "Primary",
                  },
                  {
                     cvssData: {
                        attackComplexity: "LOW",
                        attackVector: "NETWORK",
                        availabilityImpact: "NONE",
                        baseScore: 4.3,
                        baseSeverity: "MEDIUM",
                        confidentialityImpact: "LOW",
                        integrityImpact: "NONE",
                        privilegesRequired: "LOW",
                        scope: "UNCHANGED",
                        userInteraction: "NONE",
                        vectorString: "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N",
                        version: "3.1",
                     },
                     exploitabilityScore: 2.8,
                     impactScore: 1.4,
                     source: "security@open-xchange.com",
                     type: "Secondary",
                  },
               ],
            },
            published: "2023-08-02T13:15:10.323",
            references: [
               {
                  source: "security@open-xchange.com",
                  tags: [
                     "Third Party Advisory",
                     "VDB Entry",
                  ],
                  url: "http://packetstormsecurity.com/files/173943/OX-App-Suite-SSRF-SQL-Injection-Cross-Site-Scripting.html",
               },
               {
                  source: "security@open-xchange.com",
                  tags: [
                     "Mailing List",
                     "Third Party Advisory",
                  ],
                  url: "http://seclists.org/fulldisclosure/2023/Aug/8",
               },
               {
                  source: "security@open-xchange.com",
                  url: "https://documentation.open-xchange.com/appsuite/security/advisories/csaf/2023/oxas-adv-2023-0003.json",
               },
               {
                  source: "security@open-xchange.com",
                  tags: [
                     "Release Notes",
                  ],
                  url: "https://software.open-xchange.com/products/appsuite/doc/Release_Notes_for_Patch_Release_6230_7.10.6_2023-05-02.pdf",
               },
            ],
            sourceIdentifier: "security@open-xchange.com",
            vulnStatus: "Modified",
            weaknesses: [
               {
                  description: [
                     {
                        lang: "en",
                        value: "CWE-367",
                     },
                     {
                        lang: "en",
                        value: "CWE-918",
                     },
                  ],
                  source: "nvd@nist.gov",
                  type: "Primary",
               },
               {
                  description: [
                     {
                        lang: "en",
                        value: "CWE-918",
                     },
                  ],
                  source: "security@open-xchange.com",
                  type: "Secondary",
               },
            ],
         },
      },
   },
}


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