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"
            }
          ]
        }
      },
      "data_format": "MITRE",
      "data_type": "CVE",
      "data_version": "4.0",
      "description": {
        "description_data": [
          {
            "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": [],
                "vulnerable": true
              },
              {
                "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",
              "tags": [
                "Third Party Advisory"
              ],
              "url": "https://www.debian.org/security/2018/dsa-4110"
            },
            {
              "name": "[debian-lts-announce] 20180210 [SECURITY] [DLA 1274-1] exim4 security update",
              "refsource": "MLIST",
              "tags": [
                "Mailing List",
                "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",
              "tags": [
                "Patch",
                "Vendor Advisory"
              ],
              "url": "https://git.exim.org/exim.git/commit/cf3cd306062a08969c41a1cdd32c6855f1abecf1"
            },
            {
              "name": "http://openwall.com/lists/oss-security/2018/02/10/2",
              "refsource": "CONFIRM",
              "tags": [
                "Mailing List",
                "Third Party Advisory"
              ],
              "url": "http://openwall.com/lists/oss-security/2018/02/10/2"
            },
            {
              "name": "103049",
              "refsource": "BID",
              "tags": [
                "Third Party Advisory",
                "VDB Entry"
              ],
              "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",
                "Third Party Advisory"
              ],
              "url": "https://devco.re/blog/2018/03/06/exim-off-by-one-RCE-exploiting-CVE-2018-6789-en/"
            },
            {
              "name": "1040461",
              "refsource": "SECTRACK",
              "tags": [
                "Third Party Advisory",
                "VDB Entry"
              ],
              "url": "http://www.securitytracker.com/id/1040461"
            },
            {
              "name": "USN-3565-1",
              "refsource": "UBUNTU",
              "tags": [
                "Third Party Advisory"
              ],
              "url": "https://usn.ubuntu.com/3565-1/"
            },
            {
              "name": "44571",
              "refsource": "EXPLOIT-DB",
              "tags": [
                "Exploit",
                "Third Party Advisory",
                "VDB Entry"
              ],
              "url": "https://www.exploit-db.com/exploits/44571/"
            },
            {
              "name": "45671",
              "refsource": "EXPLOIT-DB",
              "tags": [
                "Exploit",
                "Third Party Advisory",
                "VDB Entry"
              ],
              "url": "https://www.exploit-db.com/exploits/45671/"
            },
            {
              "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": 10.0,
          "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"
    }
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.