usn-6411-1
Vulnerability from osv_ubuntu
Published
2023-10-04 13:41
Modified
2026-06-29 10:53
Summary
exim4 vulnerabilities
Details

It was discovered that Exim incorrectly handled certain challenge requests. A remote attacker could possibly use this issue to perform out-of-bounds reads, resulting in information leakage. (CVE-2023-42114)

It was discovered that Exim incorrectly handled validation of user-supplied data. A remote attacker could possibly use this issue to perform out-of-bounds writes, resulting in arbitrary code execution. This issue only affected Ubuntu 20.04 LTS, Ubuntu 22.04 LTS and Ubuntu 23.04. (CVE-2023-42115)

It was discovered that Exim incorrectly handled certain challenge requests. A remote attacker could possibly use this issue to perform out-of-bounds writes, resulting in arbitrary code execution. (CVE-2023-42116)

References
To clipboard 

{
  "affected": [
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2023-42114",
              "severity": [
                {
                  "score": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2023-42116",
              "severity": [
                {
                  "score": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:Pro:14.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "exim4",
            "binary_version": "4.82-3ubuntu2.4+esm6"
          },
          {
            "binary_name": "exim4-base",
            "binary_version": "4.82-3ubuntu2.4+esm6"
          },
          {
            "binary_name": "exim4-config",
            "binary_version": "4.82-3ubuntu2.4+esm6"
          },
          {
            "binary_name": "exim4-daemon-heavy",
            "binary_version": "4.82-3ubuntu2.4+esm6"
          },
          {
            "binary_name": "exim4-daemon-light",
            "binary_version": "4.82-3ubuntu2.4+esm6"
          },
          {
            "binary_name": "eximon4",
            "binary_version": "4.82-3ubuntu2.4+esm6"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:14.04:LTS",
        "name": "exim4",
        "purl": "pkg:deb/ubuntu/exim4@4.82-3ubuntu2.4+esm6?arch=source\u0026distro=trusty/esm"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.82-3ubuntu2.4+esm6"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "4.80-7ubuntu3",
        "4.80-7ubuntu4",
        "4.80-9ubuntu1",
        "4.80-9ubuntu2",
        "4.82-3ubuntu1",
        "4.82-3ubuntu2",
        "4.82-3ubuntu2.1",
        "4.82-3ubuntu2.2",
        "4.82-3ubuntu2.3",
        "4.82-3ubuntu2.4",
        "4.82-3ubuntu2.4+esm1",
        "4.82-3ubuntu2.4+esm2",
        "4.82-3ubuntu2.4+esm3",
        "4.82-3ubuntu2.4+esm4"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2023-42114",
              "severity": [
                {
                  "score": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2023-42116",
              "severity": [
                {
                  "score": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:Pro:16.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "exim4",
            "binary_version": "4.86.2-2ubuntu2.6+esm4"
          },
          {
            "binary_name": "exim4-base",
            "binary_version": "4.86.2-2ubuntu2.6+esm4"
          },
          {
            "binary_name": "exim4-config",
            "binary_version": "4.86.2-2ubuntu2.6+esm4"
          },
          {
            "binary_name": "exim4-daemon-heavy",
            "binary_version": "4.86.2-2ubuntu2.6+esm4"
          },
          {
            "binary_name": "exim4-daemon-light",
            "binary_version": "4.86.2-2ubuntu2.6+esm4"
          },
          {
            "binary_name": "eximon4",
            "binary_version": "4.86.2-2ubuntu2.6+esm4"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:16.04:LTS",
        "name": "exim4",
        "purl": "pkg:deb/ubuntu/exim4@4.86.2-2ubuntu2.6+esm4?arch=source\u0026distro=esm-infra/xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.86.2-2ubuntu2.6+esm4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "4.86-3ubuntu1",
        "4.86-7ubuntu1",
        "4.86-7ubuntu2",
        "4.86-7ubuntu3",
        "4.86.2-2ubuntu1",
        "4.86.2-2ubuntu2",
        "4.86.2-2ubuntu2.1",
        "4.86.2-2ubuntu2.2",
        "4.86.2-2ubuntu2.3",
        "4.86.2-2ubuntu2.4",
        "4.86.2-2ubuntu2.5",
        "4.86.2-2ubuntu2.6",
        "4.86.2-2ubuntu2.6+esm1",
        "4.86.2-2ubuntu2.6+esm2"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2023-42114",
              "severity": [
                {
                  "score": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2023-42116",
              "severity": [
                {
                  "score": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:Pro:18.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "exim4",
            "binary_version": "4.90.1-1ubuntu1.10+esm1"
          },
          {
            "binary_name": "exim4-base",
            "binary_version": "4.90.1-1ubuntu1.10+esm1"
          },
          {
            "binary_name": "exim4-config",
            "binary_version": "4.90.1-1ubuntu1.10+esm1"
          },
          {
            "binary_name": "exim4-daemon-heavy",
            "binary_version": "4.90.1-1ubuntu1.10+esm1"
          },
          {
            "binary_name": "exim4-daemon-light",
            "binary_version": "4.90.1-1ubuntu1.10+esm1"
          },
          {
            "binary_name": "eximon4",
            "binary_version": "4.90.1-1ubuntu1.10+esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:18.04:LTS",
        "name": "exim4",
        "purl": "pkg:deb/ubuntu/exim4@4.90.1-1ubuntu1.10+esm1?arch=source\u0026distro=esm-infra/bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.90.1-1ubuntu1.10+esm1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "4.89-5ubuntu1",
        "4.89-9ubuntu1",
        "4.89-9ubuntu2",
        "4.89-9ubuntu3",
        "4.89-9ubuntu4",
        "4.90.1-1ubuntu1",
        "4.90.1-1ubuntu1.1",
        "4.90.1-1ubuntu1.2",
        "4.90.1-1ubuntu1.3",
        "4.90.1-1ubuntu1.4",
        "4.90.1-1ubuntu1.5",
        "4.90.1-1ubuntu1.8",
        "4.90.1-1ubuntu1.9",
        "4.90.1-1ubuntu1.10"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2023-42114",
              "severity": [
                {
                  "score": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2023-42115",
              "severity": [
                {
                  "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2023-42116",
              "severity": [
                {
                  "score": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:20.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "exim4",
            "binary_version": "4.93-13ubuntu1.8"
          },
          {
            "binary_name": "exim4-base",
            "binary_version": "4.93-13ubuntu1.8"
          },
          {
            "binary_name": "exim4-config",
            "binary_version": "4.93-13ubuntu1.8"
          },
          {
            "binary_name": "exim4-daemon-heavy",
            "binary_version": "4.93-13ubuntu1.8"
          },
          {
            "binary_name": "exim4-daemon-light",
            "binary_version": "4.93-13ubuntu1.8"
          },
          {
            "binary_name": "eximon4",
            "binary_version": "4.93-13ubuntu1.8"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "exim4",
        "purl": "pkg:deb/ubuntu/exim4@4.93-13ubuntu1.8?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.93-13ubuntu1.8"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "4.92.1-1ubuntu3",
        "4.92.1-1ubuntu4",
        "4.93~RC2-1ubuntu1",
        "4.93-9ubuntu1",
        "4.93-11ubuntu1",
        "4.93-12ubuntu1",
        "4.93-13ubuntu1",
        "4.93-13ubuntu1.1",
        "4.93-13ubuntu1.5",
        "4.93-13ubuntu1.6",
        "4.93-13ubuntu1.7"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2023-42114",
              "severity": [
                {
                  "score": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2023-42115",
              "severity": [
                {
                  "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2023-42116",
              "severity": [
                {
                  "score": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:22.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "exim4",
            "binary_version": "4.95-4ubuntu2.3"
          },
          {
            "binary_name": "exim4-base",
            "binary_version": "4.95-4ubuntu2.3"
          },
          {
            "binary_name": "exim4-config",
            "binary_version": "4.95-4ubuntu2.3"
          },
          {
            "binary_name": "exim4-daemon-heavy",
            "binary_version": "4.95-4ubuntu2.3"
          },
          {
            "binary_name": "exim4-daemon-light",
            "binary_version": "4.95-4ubuntu2.3"
          },
          {
            "binary_name": "eximon4",
            "binary_version": "4.95-4ubuntu2.3"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "exim4",
        "purl": "pkg:deb/ubuntu/exim4@4.95-4ubuntu2.3?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.95-4ubuntu2.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "4.94.2-7ubuntu2",
        "4.95-2ubuntu2",
        "4.95-4ubuntu1",
        "4.95-4ubuntu2",
        "4.95-4ubuntu2.1",
        "4.95-4ubuntu2.2"
      ]
    }
  ],
  "aliases": [],
  "details": "It was discovered that Exim incorrectly handled certain challenge requests.\nA remote attacker could possibly use this issue to perform out-of-bounds\nreads, resulting in information leakage. (CVE-2023-42114)\n\nIt was discovered that Exim incorrectly handled validation of user-supplied\ndata. A remote attacker could possibly use this issue to perform\nout-of-bounds writes, resulting in arbitrary code execution. This issue\nonly affected Ubuntu 20.04 LTS, Ubuntu 22.04 LTS and Ubuntu 23.04.\n(CVE-2023-42115)\n\nIt was discovered that Exim incorrectly handled certain challenge requests.\nA remote attacker could possibly use this issue to perform out-of-bounds\nwrites, resulting in arbitrary code execution. (CVE-2023-42116)\n",
  "id": "USN-6411-1",
  "modified": "2026-06-29T10:53:04Z",
  "published": "2023-10-04T13:41:19Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-6411-1"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2023-42114"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2023-42115"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2023-42116"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "exim4 vulnerabilities",
  "upstream": [
    "UBUNTU-CVE-2023-42114",
    "UBUNTU-CVE-2023-42115",
    "UBUNTU-CVE-2023-42116"
  ]
}



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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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