gsd-2018-6789
Vulnerability from gsd
Modified
2023-12-13 01:22
Details
An issue was discovered in the base64d function in the SMTP listener in Exim before 4.90.1. By sending a handcrafted message, a buffer overflow may happen. This can be used to execute code remotely.
Aliases
Aliases
CVE-2018-6789


To clipboard 

{
   GSD: {
      alias: "CVE-2018-6789",
      description: "An issue was discovered in the base64d function in the SMTP listener in Exim before 4.90.1. By sending a handcrafted message, a buffer overflow may happen. This can be used to execute code remotely.",
      id: "GSD-2018-6789",
      references: [
         "https://www.suse.com/security/cve/CVE-2018-6789.html",
         "https://www.debian.org/security/2018/dsa-4110",
         "https://ubuntu.com/security/CVE-2018-6789",
         "https://security.archlinux.org/CVE-2018-6789",
         "https://alas.aws.amazon.com/cve/html/CVE-2018-6789.html",
         "https://packetstormsecurity.com/files/cve/CVE-2018-6789",
      ],
   },
   gsd: {
      metadata: {
         exploitCode: "unknown",
         remediation: "unknown",
         reportConfidence: "confirmed",
         type: "vulnerability",
      },
      osvSchema: {
         aliases: [
            "CVE-2018-6789",
         ],
         details: "An issue was discovered in the base64d function in the SMTP listener in Exim before 4.90.1. By sending a handcrafted message, a buffer overflow may happen. This can be used to execute code remotely.",
         id: "GSD-2018-6789",
         modified: "2023-12-13T01:22:35.558553Z",
         schema_version: "1.4.0",
      },
   },
   namespaces: {
      "cisa.gov": {
         cveID: "CVE-2018-6789",
         dateAdded: "2021-11-03",
         dueDate: "2022-05-03",
         product: "Exim",
         requiredAction: "Apply updates per vendor instructions.",
         shortDescription: "Issue in the base64d function in the SMTP listener in Exim before 4.90.1. By sending a handcrafted message, a buffer overflow may happen. This can be used to execute code remotely.",
         vendorProject: "Exim",
         vulnerabilityName: "Exim Buffer Overflow Vulnerability",
      },
      "cve.org": {
         CVE_data_meta: {
            ASSIGNER: "cve@mitre.org",
            ID: "CVE-2018-6789",
            STATE: "PUBLIC",
         },
         affects: {
            vendor: {
               vendor_data: [
                  {
                     product: {
                        product_data: [
                           {
                              product_name: "n/a",
                              version: {
                                 version_data: [
                                    {
                                       version_value: "n/a",
                                    },
                                 ],
                              },
                           },
                        ],
                     },
                     vendor_name: "n/a",
                  },
               ],
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         data_format: "MITRE",
         data_type: "CVE",
         data_version: "4.0",
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                  lang: "eng",
                  value: "An issue was discovered in the base64d function in the SMTP listener in Exim before 4.90.1. By sending a handcrafted message, a buffer overflow may happen. This can be used to execute code remotely.",
               },
            ],
         },
         problemtype: {
            problemtype_data: [
               {
                  description: [
                     {
                        lang: "eng",
                        value: "n/a",
                     },
                  ],
               },
            ],
         },
         references: {
            reference_data: [
               {
                  name: "https://exim.org/static/doc/security/CVE-2018-6789.txt",
                  refsource: "CONFIRM",
                  url: "https://exim.org/static/doc/security/CVE-2018-6789.txt",
               },
               {
                  name: "[oss-security] 20180207 CVE-2018-6789 Exim 4.90 and earlier: buffer overflow",
                  refsource: "MLIST",
                  url: "http://www.openwall.com/lists/oss-security/2018/02/07/2",
               },
               {
                  name: "USN-3565-1",
                  refsource: "UBUNTU",
                  url: "https://usn.ubuntu.com/3565-1/",
               },
               {
                  name: "http://openwall.com/lists/oss-security/2018/02/10/2",
                  refsource: "CONFIRM",
                  url: "http://openwall.com/lists/oss-security/2018/02/10/2",
               },
               {
                  name: "1040461",
                  refsource: "SECTRACK",
                  url: "http://www.securitytracker.com/id/1040461",
               },
               {
                  name: "DSA-4110",
                  refsource: "DEBIAN",
                  url: "https://www.debian.org/security/2018/dsa-4110",
               },
               {
                  name: "44571",
                  refsource: "EXPLOIT-DB",
                  url: "https://www.exploit-db.com/exploits/44571/",
               },
               {
                  name: "[debian-lts-announce] 20180210 [SECURITY] [DLA 1274-1] exim4 security update",
                  refsource: "MLIST",
                  url: "https://lists.debian.org/debian-lts-announce/2018/02/msg00009.html",
               },
               {
                  name: "https://git.exim.org/exim.git/commit/cf3cd306062a08969c41a1cdd32c6855f1abecf1",
                  refsource: "CONFIRM",
                  url: "https://git.exim.org/exim.git/commit/cf3cd306062a08969c41a1cdd32c6855f1abecf1",
               },
               {
                  name: "https://devco.re/blog/2018/03/06/exim-off-by-one-RCE-exploiting-CVE-2018-6789-en/",
                  refsource: "MISC",
                  url: "https://devco.re/blog/2018/03/06/exim-off-by-one-RCE-exploiting-CVE-2018-6789-en/",
               },
               {
                  name: "103049",
                  refsource: "BID",
                  url: "http://www.securityfocus.com/bid/103049",
               },
               {
                  name: "45671",
                  refsource: "EXPLOIT-DB",
                  url: "https://www.exploit-db.com/exploits/45671/",
               },
               {
                  name: "http://packetstormsecurity.com/files/162959/Exim-base64d-Buffer-Overflow.html",
                  refsource: "MISC",
                  url: "http://packetstormsecurity.com/files/162959/Exim-base64d-Buffer-Overflow.html",
               },
            ],
         },
      },
      "nvd.nist.gov": {
         configurations: {
            CVE_data_version: "4.0",
            nodes: [
               {
                  children: [],
                  cpe_match: [
                     {
                        cpe23Uri: "cpe:2.3:a:exim:exim:*:*:*:*:*:*:*:*",
                        cpe_name: [],
                        versionEndExcluding: "4.90.1",
                        vulnerable: true,
                     },
                  ],
                  operator: "OR",
               },
               {
                  children: [],
                  cpe_match: [
                     {
                        cpe23Uri: "cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*",
                        cpe_name: [],
                        vulnerable: true,
                     },
                     {
                        cpe23Uri: "cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*",
                        cpe_name: [],
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                     },
                     {
                        cpe23Uri: "cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*",
                        cpe_name: [],
                        vulnerable: true,
                     },
                  ],
                  operator: "OR",
               },
               {
                  children: [],
                  cpe_match: [
                     {
                        cpe23Uri: "cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*",
                        cpe_name: [],
                        vulnerable: true,
                     },
                     {
                        cpe23Uri: "cpe:2.3:o:canonical:ubuntu_linux:17.10:*:*:*:*:*:*:*",
                        cpe_name: [],
                        vulnerable: true,
                     },
                     {
                        cpe23Uri: "cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*",
                        cpe_name: [],
                        vulnerable: true,
                     },
                  ],
                  operator: "OR",
               },
            ],
         },
         cve: {
            CVE_data_meta: {
               ASSIGNER: "cve@mitre.org",
               ID: "CVE-2018-6789",
            },
            data_format: "MITRE",
            data_type: "CVE",
            data_version: "4.0",
            description: {
               description_data: [
                  {
                     lang: "en",
                     value: "An issue was discovered in the base64d function in the SMTP listener in Exim before 4.90.1. By sending a handcrafted message, a buffer overflow may happen. This can be used to execute code remotely.",
                  },
               ],
            },
            problemtype: {
               problemtype_data: [
                  {
                     description: [
                        {
                           lang: "en",
                           value: "CWE-119",
                        },
                     ],
                  },
               ],
            },
            references: {
               reference_data: [
                  {
                     name: "https://exim.org/static/doc/security/CVE-2018-6789.txt",
                     refsource: "CONFIRM",
                     tags: [
                        "Vendor Advisory",
                     ],
                     url: "https://exim.org/static/doc/security/CVE-2018-6789.txt",
                  },
                  {
                     name: "[oss-security] 20180207 CVE-2018-6789 Exim 4.90 and earlier: buffer overflow",
                     refsource: "MLIST",
                     tags: [
                        "Mailing List",
                        "Third Party Advisory",
                     ],
                     url: "http://www.openwall.com/lists/oss-security/2018/02/07/2",
                  },
                  {
                     name: "DSA-4110",
                     refsource: "DEBIAN",
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                     url: "https://www.debian.org/security/2018/dsa-4110",
                  },
                  {
                     name: "[debian-lts-announce] 20180210 [SECURITY] [DLA 1274-1] exim4 security update",
                     refsource: "MLIST",
                     tags: [
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                        "Third Party Advisory",
                     ],
                     url: "https://lists.debian.org/debian-lts-announce/2018/02/msg00009.html",
                  },
                  {
                     name: "https://git.exim.org/exim.git/commit/cf3cd306062a08969c41a1cdd32c6855f1abecf1",
                     refsource: "CONFIRM",
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                        "Patch",
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                     url: "https://git.exim.org/exim.git/commit/cf3cd306062a08969c41a1cdd32c6855f1abecf1",
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                     url: "http://www.securityfocus.com/bid/103049",
                  },
                  {
                     name: "https://devco.re/blog/2018/03/06/exim-off-by-one-RCE-exploiting-CVE-2018-6789-en/",
                     refsource: "MISC",
                     tags: [
                        "Technical Description",
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                     ],
                     url: "https://devco.re/blog/2018/03/06/exim-off-by-one-RCE-exploiting-CVE-2018-6789-en/",
                  },
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                     refsource: "SECTRACK",
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                  },
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                  },
                  {
                     name: "http://packetstormsecurity.com/files/162959/Exim-base64d-Buffer-Overflow.html",
                     refsource: "MISC",
                     tags: [],
                     url: "http://packetstormsecurity.com/files/162959/Exim-base64d-Buffer-Overflow.html",
                  },
               ],
            },
         },
         impact: {
            baseMetricV2: {
               acInsufInfo: false,
               cvssV2: {
                  accessComplexity: "LOW",
                  accessVector: "NETWORK",
                  authentication: "NONE",
                  availabilityImpact: "PARTIAL",
                  baseScore: 7.5,
                  confidentialityImpact: "PARTIAL",
                  integrityImpact: "PARTIAL",
                  vectorString: "AV:N/AC:L/Au:N/C:P/I:P/A:P",
                  version: "2.0",
               },
               exploitabilityScore: 10,
               impactScore: 6.4,
               obtainAllPrivilege: false,
               obtainOtherPrivilege: false,
               obtainUserPrivilege: false,
               severity: "HIGH",
               userInteractionRequired: false,
            },
            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:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                  version: "3.0",
               },
               exploitabilityScore: 3.9,
               impactScore: 5.9,
            },
         },
         lastModifiedDate: "2021-06-03T18:15Z",
         publishedDate: "2018-02-08T23:29Z",
      },
   },
}


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